Articles about Optics and Photonics, Lasers, Fiber Bragg gratings and FBG sensors

Fiber optic sensors for extreme conditions

on June 28, 2019

1Environmental conditions, in which one or several external factors – radiation, temperature, electromagnetic field, aggressiveness, humidity, pressure, deformation – have extremely possible constant values, are considered to be extreme. Due to the rapid development of automated monitoring sensing systems in all areas of industry, the need for fiber sensors of physical quantities — temperature, pressure, acceleration, displacement, current — is increasing.

In addition to high metrological characteristics, the fiber optic sensors should have high reliability, stability, noise immunity, durability and ease of integration into micro control systems. This applies particularly to such industries as avionics, metallurgy, car electronics, heat engineering and energy, medical equipment, high-precision weapons systems.

The fiber optic sensors satisfy the requirements listed to the maximum extent. Until recently, the development of fiber optic sensors was held back mainly by two factors. Firstly, there were no cheap optoelectronic components, for example, low-noise laser diodes, highly sensitive photodiodes, passive optical fiber elements.

Secondly, due to the nonlinearity of the optical signal relative to the measured value, special signal processing algorithms are required (averaging, nonlinear processing, integral transformations), which means that a signal processor with high performance is needed.

Nevertheless, with the future development of fiber technology, the market situation began to improve; new prototypes of purely optical integrated circuits have appeared, where light carries the information, and logical operations are performed by optical fiber elements.

Before the consideration of fiber optic sensors, we should consider their principle of operation. A modern optical fiber consists of a core, through which light propagates, and a shell. Also, it is protected by a polymer sheeting outside. The fiber optic core is a thread of plastic or glass with certain additives (usually germanium) to increase the refractive index.

Fiber optic sensors are compact instruments used to track changes in various factors. Optical fiber here acts simultaneously as a sensitive element and a channel through which the received data is transmitted. Such fiber optic devices are available both in standard and in special versions for operation in harsh conditions.

Fiber optic sensors are used in a variety of technical industries. For example, they are used to controlling elements of buildings, heating mains, bridges in construction and public utilities. At the mines, the main aim of the fiber devices is warning about fire, tracking the state of working and holes. In the oil and gas industry, they demonstrate key indicators of wells and pipelines. The following types of sensors are distinguished:

Fiber optic sensors designed for use in harsh environments, at temperatures up to 400 °C, in harsh chemicals or in a vacuum, provide high accuracy and work reliably over a long service life.

Fiber optic sensors for specific purposes have optimally high performance for solving the most unusual and complex tasks: the measurement with the highest accuracy – up to 100 microns, robotic systems with regular bending of optical fibers, area monitoring, special objects or technological processes, such as the detection of semiconductor plates, labels, glass objects, liquids, etc.

The use of fiber optic sensors is economically feasible in large sites where a big number of sensing devices are required for continuous monitoring. Special models of fiber sensors are available for operation in harsh environments; these sensors are resistant to high temperatures, corroding media and able to operate in a vacuum. Depending on the principle of the fiber sensing device operation, point sensors and distributed sensors are distinguished.

Point sensors

The main component here is fiber Bragg grating. The emission reaching the fiber optic sensor from a broadband source is reflected in the form of a narrow spectral band. The rest of the light moves along the optical fiber. This fiber optic technology makes it possible to install multiple controllers along the entire length of the line, obtaining absolute responses without additional calibration. At the present time, this is the most reliable fiber sensing device.

Point sensors allow measuring:

  • temperature;
  • vibrations;
  • pressure;
  • deformations;
  • angle, etc.

Distributed sensors

2The design of distributed temperature sensors includes a couple of key components: optical fiber and interrogator. A similar fiber optic system is used in cases where monitoring is required for long lines.  

Distributed acoustic sensors can be applied to protect large objects and measure deformations. They operate on a similar principle. The difference is that the device does not measure the spectrum, but the oscillations of backscattered emission. Thanks to these data, it is possible to determine the source of the sound wave and take timely measures if unauthorized intervention occurs.

What is the advantage of using fiber optic sensors in comparison with traditional semiconductor sensors in the integrated design? Consider the example of specific industries.

  • Avionics and auto electronics

In these fields of application, such advantages of fiber sensors are important as resistance to interference, the ability to operate in conditions of lower (down to –70 °C) and higher (up to 150 °C) temperatures, compact size and weight. Here optical sensors of temperature, linear and angular position, accelerometers can be used. Optical gyroscopes based on a ring interferometer are widely used in military and civil aviation.

  • Energy industry

The advantage of using fiber sensors in this area is provided by their stable thermal and electrical insulating properties, noise immunity and inertia-freedom. Fiber optic voltage transformers, current, temperature sensors can be used in this industry. Such fiber sensors can be used to develop a diagnostic system for high-voltage transformers without their taking out of service.

  • Medicine and biotechnology

The advantages of fiber optic sensors such as flexibility and small diameter of optical fiber, chemical and biological resistance, high spatial resolution are particularly inherent to this specific area.

For example, researchers from Chicago have developed a new method for diagnosing muscle disorders, which uses a thin fiber optic sensor to quickly scan muscle tissue.

Diagnosing muscle disorders often requires the use of a biopsy, which can be very painful and difficult to perform. The researchers have developed a less invasive method for diagnosing muscle diseases to solve this problem. The alternative solution is based on a miniature fiber sensor that can quickly measure the health of muscle tissue.

  • Chemical and oil and gas industry, metallurgy

In these industries, fiber optic sensors with non-contact measurement methods are in demand (beam thermometers, optical sensors for measuring gas flow, acceleration and displacement sensors), which can operate stably in aggressive and explosive environments, high temperatures, and intense electromagnetic interference.

The oil and gas industry is one of the leading industries worldwide. Due to the specifics of this industry, increased requirements are applied to it, both in terms of safety and environmental factors. The oil and gas industry is one of the leading industries in terms of inventions and the introduction of the latest monitoring and data collection systems at all stages of production because of strict requirements.

One of the fields of fiber optic application that is the main consumer of innovative and breakthrough fiber solutions is in-line diagnostics of oil and gas pipelines, it is an integral part of the transportation.

There are many sensing systems based on ultrasonic, magnetic, eddy current and other sensors. One of the modern and new directions can be identified as fiber optic technology. Fiber optic technology is not novel, but it appeared later than others in the oil and gas industry. Fiber optic sensors open up new opportunities for this area due to the superiority of certain fiber sensors by certain indicators. Fiber sensing materials can be dielectrics that do not conduct electricity and are not sensitive to electromagnetic interference, which allows their use in explosive atmospheres. Also, fiber optic sensors can operate in the environment of high temperatures and pressures, which makes it possible to install them where other sensors cannot work. Fiber optic sensors can measure almost all possible parameters. Such as temperature, pressure, magnetic field, position in space, gas concentration, vibration, distance and more. In addition to excellent measuring characteristics, fiber sensors also have other equally impressive qualities, such as high reliability, low energy consumption, small dimensions, low cost of materials for manufacturing, and long operating time.

In the oil industry, the optical fiber sensors are actively used and allow the development of fiber optic monitoring systems for the equipment involved in oil production, well construction and oilfield construction. Other sensing devices can be designed on the basis of modern fiber optic sensors for in-line diagnostics, capable of operating in extreme conditions and receiving information inaccessible to other types of sensors. In addition to the geometric data of the pipeline, devices equipped with fiber sensors based on fiber optic technology are able to obtain data on the chemical composition of petroleum and petroleum products at petrochemical facilities, since accurate and timely information on the state of petroleum products is required to optimize the process.

If you want to obtain a highly efficient sensing system, you should choose Optromix company. Optromix is a manufacturer of innovative fiber optic products for the global market. The company provides the most technologically advanced fiber optic solutions for monitoring worldwide. Optromix is a fast-growing vendor of fiber Bragg grating (FBG) products line such as fiber Bragg grating sensors, FBG interrogators and multiplexers, distributed acoustic sensing (DAS) systems, distributed temperature sensing (DTS) systems. If you are interested in FBG sensors and want to learn more, please contact us at info@optromix.com

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editorFiber optic sensors for extreme conditions

Fiber optic probes demonstrate molecular bonds

on June 21, 2019

carbon-2222968_640In one very popular movie, they say that the possibility to send a person into the quantum reality and bring them back would be a “billion-to-one cosmic fluke”. In reality, it is also difficult to shrink a light laser beam to a nanometer-sized point to observe quantum-scale light-matter interactions and get the data information. Recently researchers from the USA have designed a new fiber optic technology based on the use of optical fiber probes to tunnel light into the quantum realm at an unprecedented efficiency.

Thus, the world’s first fiber optic device for nanoscopy process is portable and inexpensive, the used fiber technology combines a glass optical fiber with a silver nanowire condenser. The fiber optic probe produces a high-efficiency round-trip light tunnel that compresses visible light by a laser beam to the very tip of the condenser for providing local interaction with molecules and transmits the information that allows decrypting and demonstrating the nanoworld.

It should be noted that the possibility to go up the object fine details is reduced by the wave nature of light. Unfortunately, despite the half-century of developments in fiber optic technology still remains quite esoteric and applied by few. The thing is that it is quite difficult to transmit light produced by a laser beam through a tiny pinhole that is a thousand times thinner than a human hair, and not all photons or light particles are able to pass the pinhole and achieve the necessary object; it is almost impossible to get a one-way ticket, but a round trip ticket is almost a dream.

Nowadays in spite of the fact that modern fiber optic probes enable only one in 1,000 photons to reach the object, while the novel optical fiber device transmits half the photons to the tip. The principle of operation includes a gradual increase in the wavelength of the far-field light as it goes down a thin optical fiber, herewith, its frequency remains constant.

At the moment when it reaches the wavelength of the electron density wave in the silver nanowire keeping on top of the optical fiber,  all energy is got in the electron density wave and starts to travel on the surface of the nanowire instead. Then this wave inspissates to a few nanometers at the tip apex step by step.

To be precise, this fiber optic device presents a small silver needle with light coming off the tip resembling Harry Potter’s wand. This fiber optic probe is applied to map out the frequency of molecular vibrations that enable to analyze chemical bonds that hold atoms together in a molecule. Therefore, this is about tip-enhanced Raman spectroscopy, the most challenging area of near-field fiber optic microscopy because it is concerned with quite weak signals.

The fiber optic probe allows achieving 1-nanometer resolution on simple portable equipment, in the near future, this optical fiber device could become a powerful analytical tool that helps to discover a new world of information to researchers in all fields of nanoscience.

Optromix is a provider of top quality special fibers and broad spectra optical fiber solutions. The company delivers the best quality special fibers and fiber cables, fiber optic bundles, spectroscopy fiber optic probes, probe couplers and accessories for process spectroscopy to clients. If you have any questions or would like to buy an optical fiber product, please contact us at info@optromix.com

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editorFiber optic probes demonstrate molecular bonds

10 reasons to choose fiber laser marking machines

on June 14, 2019

Fiber laser machines for marking play an important role in businesses that require engraving or adding markings to their products. Moreover, nowadays numerous companies insist on putting their logos or special markings, containing a crucial company or product’s information, to their item.

laser-2819138_640It should be noted that the principle of fiber laser marking machines’ operation is based on the use of highly concentrated energy from light generated by a laser beam of high quality, then this energy obtained by such a fiber laser system allows creating an image or writing over a product’s surface.

Also, fiber laser machines for marking are considered to be quite useful because they apply the light from a laser beam as a way of a product’s identification. Compared to the previous identification technique that used paint and ink for marking, fiber laser technology based on concentrated energy by laser beam’s light produce markings that cannot be smudged or covered-over. This is the main reason why the majority of companies began to use this fiber laser system-based solution for engraving logos and descriptions on their products.

Herewith, fiber laser marking machines offer numerous other reasons why it is necessary to choose them for your business:

  1. Fiber laser technology is a highly reliable and environmentally friendly solution;
  2. Laser system application on a wide range of materials;
  3. High-quality permanent marks on any surface;
  4. Cost-efficiency;
  5. Fiber laser marking machines are extremely durable and long-lasting;
  6. Resistance to harsh environmental conditions (high temperatures);
  7. Resistance to the process of sterilization, the laser system machine is ideal for medical and surgical equipment;
  8. High level of safety without the use of ink, paint, dangerous chemical matters or fumes;
  9. Fiber laser marking is software-based, to be precise, the machine enables to engrave any letter or character;
  10. Possibility to produce high-quality images on an object.

Finally, these marking machines have numerous fields of fiber laser applications. For example, they are widely applied in the medical industry for manufacturing very specific medical tools. Fiber laser marking machines allows marking images, logos or even description on the medical devices that are subject of the sterilization process, herewith, the fiber laser technology does not influence the surface, consequently, it is safe to any patient.

One more fiber laser application includes marking the serial number of firearms that makes every item personal. Thus, it becomes easier to identify any firearm in the case of its stealing. Also, fiber laser marking machines are used for marking the serial number of each part of the industry during the manufacturing process.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editor10 reasons to choose fiber laser marking machines

Laser systems allow increasing proton-beam energies

on June 7, 2019

green-1757807_640Nowadays laser systems are highly requested in the physical application for carrying out experiments and learning properties of different materials. Thus, now it is possible to double the energy of proton laser beams emitted by laser-driven particle accelerators without any boost in laser system intensity.

A researcher from Sweden put forward a suggestion of computer simulations. The operation of this laser technology is based on splitting the laser beam into two parts and in case of success, it can open new possibilities, consequently, finding a wide range of novel laser applications. Also, it is planned to develop an accelerator of compact size that could allow making cancer treatment more accessible.

The fact is that traditional laser system accelerators employ externally-applied electric and magnetic fields to advance charged particles such as protons, but it can also be realized by firing ultra-intense laser beam pulses produced by a fiber laser at targets such as thin, metallic foils.

Thus, the light emitted by a laser beam enables to turn away negatively-charged electrons in the target, while the much heavier positively-charged atomic nuclei are not affected. Herewith, such charge separation in laser systems produces a big local electric field in the wake of the pulse that can be applied to make charged particles faster.

It should be noted that a highly important advantage of the laser system acceleration is that such laser technology can be achieved in using compact table-top tools. Therefore, this is not the same as in traditional accelerators, which have the size of a house or even larger to produce comparable particle energies.

Nevertheless, there are still some obstacles in developing practical fiber laser systems that produce enough particles at the energies necessary for medical and other fields of laser applications because at the present time the method of boosting the intensity of the laser beam pulse does not cause a corresponding boost in particle energy.

The researcher confirms that the mentioned energy challenge can be resolved by dividing the laser beam pulse into two equal-energy pulses, which later hit the target simultaneously at different, accurately calculated angles of incidence. This laser technology has been successfully demonstrated through simulation technique, and it is possible to increase the peak electric field when the laser beam pulses collide.

Finally, the experiment demonstrates that possibly the laser system technique could double the energy of the proton laser beam and create five times as many protons — all with far more flexible control parameters than it was necessary before. The laser technology could cause the creation of compact accelerators for a wide range of technologies, containing materials analysis, and testing spacecraft for their resilience against cosmic radiation.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorLaser systems allow increasing proton-beam energies

Laser system technology allows developing the Moon

on May 31, 2019

moon-vehicle-67521_640All the time the moon plays a crucial role for research groups because it is a research station and starting point for further space expeditions that could offer numerous benefits for the developing of laser technology. Nevertheless, the costs of space flights and transports to the Moon remain pretty high (about €700,000). That is why it is planned to use laser systems for solving the problem.

In order to conquer the Earth’s satellite, it is necessary to produce infrastructure, components, and devices directly on the Moon. However, the question is what materials to use. Therefore, the researchers plan to apply a laser system at the satellite, developed to melt moon dust (regolith).

In this case, the main principle of the proposed laser technology is the use of a laser system with a weight of no more than 3kg and the volume of a big juice package. It is planned that the laser system technology will be able to melt down local materials on the moon and change them into different structures subsequently.

The researchers confirm that the test of laser technology was carried out. Finally, it demonstrates that it is possible to convert lunar regolith with already available hardware components, and this fact is highly important for the planning of future expeditions. Laser systems make larger and more sustainable projects on the surface of the moon possible.

To be more precise, the researchers plan to melt regolith or moon dust on the lunar surface in a controlled way with the help of their laser system technology. Then, the material is cooling and it forms a robust structure that can be employed for the building of future outpost in space.

However, the process of regolith melting by a laser system is required to be controlled using high-resolution sensing devices. Moreover, it is expected that the results obtained from the experiments of the laser technology would have a great influence on discovery missions in general.

Herewith, if such laser system application succeeds on the moon, then it will be possible to create larger structures, whole infrastructures, for example, foundations, paths, and landing surfaces due to the developed laser system technology. At the present time, the laser system project has been operating for about nine months.

It should be also noted that early experiments demonstrate highly promising results. To be precise, the laboratory setup is adapted; available, conventional laser system device with traditional hardware identified and tested, the fiber optics designed and tested, herein, specifics have not yet been revealed.

Nowadays, the researchers develop the fiber laser that will be able to adapt to the load compartment of the lunar vehicle (rover). The laser system is installed into a tunnel at the bottom of the rover and has to withstand shocks and massive temperature differences.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorLaser system technology allows developing the Moon

Why it is necessary to develop fiber optic technology

on May 24, 2019

Lighted Purple Fiber Optic Lamp (1)Fiber optic technology is highly promising now, optical fibers make a great contribution to science and offer the best medical equipment, improved environmental monitoring, more media channels – and possibly better solar panels. The fact is fiber optics are considered to be the best at signal transmission without serious loss in the transfer.

Nevertheless, the glass in an optical fiber is good at a wavelength of more or less 3 microns and their efficiency reduces if the wavelength is longer. Thus, sometimes such fiber optic limit causes problems. For example, the near-infrared part of the wave spectrum of optical fibers is applied in the telecommunication area because of its low loss of energy during passing through the glass.

Herewith, if it was possible to use even longer wavelengths, the fiber optic technology would offer new advantages such as better medical diagnoses and more accurate environmental monitoring of airborne gas particles. Also, various media channels could have more space due to longer fiber optic wavelengths because nowadays there is an intense competition where free space transmission normally takes place now.

It should be noted that glass optical fibers are not made of pure glass material, however, a core with other material is required for the good signal transmission. This was quite difficult to achieve, and the fiber optic techniques have continued to develop over the last 50 years. All that time different research teams conducted experiments with optical fiber using a semiconductor core of silicon and gallium antimonide instead of germanium oxide, which is applied in silica fiber optics today.

The use of the gallium antimonide as the core of an optical fiber is highly promising due to its ability to emit the infrared light, but this fiber should be then treated by a laser system to concentrate the antimonide. Therefore, such laser system process can be realized at room temperature in spite of the fact that the laser processing influences the fiber optic core properties.

Silicon material, in its turn, is considered to be the most widely used matter in solar panels. The combination of silicon and oxygen allows using the material both in glass and glass optical fiber cables. Gallium antimonide is more specific material, although it is also used in fiber optic devices in the same composition but not in the same way.

Finally, the newly developed fiber optic technique is based on the distribution of the gallium antimonide throughout the silicon material. This technique of crystal growing is simpler and cheaper than others, herein, the fiber optic technology opens numerous possible applications as well as enables to provide more efficient use of rare resources like gallium.

Optromix is a provider of top quality special fibers and broad spectra optical fiber solutions. The company delivers the best quality special fibers and fiber cables, fiber optic bundles, spectroscopy fiber optic probes, probe couplers and accessories for process spectroscopy to clients. If you have any questions or would like to buy an optical fiber product, please contact us at info@optromix.com

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editorWhy it is necessary to develop fiber optic technology

Laser systems for vessel diseases therapy

on May 17, 2019

A team of researchers from Canada offers a new technique of multiphoton photothermolysis to selectively close single blood vessels within the tissue, using a targeted therapy by laser systems. The application of laser technology includes the treatment of different vascular diseases and dysregulated blood vessels, varying from cancers to macular degeneration to port wine birthmarks.

Volume_rendered_CT_scan_of_abdominal_and_pelvic_blood_vessels (1)Such therapy treatment is based on multiphoton absorption using laser systems. The fiber laser device operation applies a targeted laser beam produced by a near-infrared femtosecond fiber laser, herewith, the beam is directed at the center of the necessary vessel.

Thus, the femtosecond laser creates localized heating that distributes to the blood vessel walls and evokes it to destroy. It should be mentioned that it is possible to induce the multiphoton absorption by the laser system only at the focal point with extremely high power density from the laser beam, that is why nearby vessels are in safe.

The femtosecond laser system is considered to be highly promising because it has such an advantage as absorption at the focal point only. Therefore, the fiber laser system allows directing the focal point with a microstructure so it is possible to treat the microstructure very accurately without any adverse effects to the nearby issue.

The researchers developed an optical system that enables imaging, targeting and closing a single blood vessel. They use a 785 nm diode laser in order to image the required blood vessel with the help of reflectance confocal microscopy and to affirm the closure of the blood vessel after its treatment.

Moreover, it should be noted that a powerful Ti: sapphire femtosecond laser tuned to 830 nm is used for the treatment procedure. And the near-infrared light from the fiber laser beam allows making deeper penetration than the visible wavelengths offer for single-photon absorption-based techniques.

The researchers have tested the laser technology on a mouse ear model, and it turns out that single vessels of different sizes, including capillaries and venules, are closed. Thus, the fiber laser device closes blood vessels deep within a tissue while saving superficial blood vessels.

Finally, this fiber laser technique is ideal for selective denaturation of certain vessels while saving other vessels to maintain normal tissue physiology once the disease is treated. Nevertheless, laser technology still requires improvements, for example, in some cases, the vessels could be partially blocked instead of completely closed.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorLaser systems for vessel diseases therapy

A powerful 10-petawatt laser system is able to vaporize matter

on May 13, 2019

Red_Laser_through_irregular_glass_mj1Laser technology is a highly powerful tool that has numerous applications in different fields. Laser system power resembles the sun’s one but it is pretty weaker. Nevertheless, recently a team of researchers from Romania has developed a laser system with one-tenth of the sun’s power on Earth that is equal to 10 petawatts (PW).

At the present time, this fiber laser is considered to be the most powerful laser ever built, herein, it should be mentioned that the laser system is the most concentrated power on our planet. For example, the previous laser of 1PW was called a Death Star, the new laser system is 10 times as strong compared to laser pointers that are of 0.005-watt for safety in the USA.

The powerful 10PW laser system is able to simply vaporize matter, enlarging new possibilities concerning what happens during a supernova. Another laser application includes the possibility of studying the formation of heavy metals. The researchers believe that laser technology may find potential use in advancing medical research in proton cancer therapy.

Moreover, the laser system can be applied to handle radioactive waste as well as to develop new ways to find and characterize nuclear material enabling security groups to scan, for example, incoming shipping containers for dangerous and illegal contents.

The fact is that over the last decades the power of laser systems and laser modules has enlarged so much that the laws of light-matter interaction change greatly. Thus, such changes allow developing new techniques to produce x-rays, gamma-rays, and highly energetic particles. And these laser technologies, in their turn, can be employed in various scientific fields, whether in medical research or material sciences.

The laser system is established inside a protective chamber that is controlled by the researchers behind a computer. Herewith, the laser uses two systems – high power laser system that produces laser pulses and laser beam transport system that directs the pulses into the required direction with high precision.

It should be noted that a highly controlled environment in air quality and the vibration is required by the whole laser system. Its laser beam could be visible to the human eye and glowing red, despite the fact that it is toward the infrared radiation limit. And the laser beam focus is about 60 cm or a little less than two feet in diameter.

Finally, it is planned that the 10PW laser system will become even stronger by combining two 10 PW lasers to create a device of 1023 watts intensity per square centimeter, a wavelength of 820 nanometers, pulse lengths of 25 femtoseconds compared to the present strength of 1015.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorA powerful 10-petawatt laser system is able to vaporize matter

Semiconductor laser system opens new possibilities in data transmission

on April 26, 2019

WIFI (1)A group of researchers from the USA succeeded in a record transmission using a common semiconductor laser system for the first time as a radio frequency transmitter. Thus, the researchers presented a laser system that is able to emit microwaves wirelessly, modulate them, and receive external radio frequency signals.

Therefore, this development enlarges possibilities for the creation of novel types of hybrid electronic-photonic devices, and moreover, this kind of semiconductor lasers is highly promising because it leads to the appearance of ultra-high-speed Wi-Fi. It should be mentioned that the research is based on previous work.

According to the research, a quantum cascade laser system produces an infrared frequency comb that can be used for generating terahertz frequencies, wavelengths of the electromagnetic spectrum enabling to transmit data information hundreds of times faster than it is possible to do today using modern wireless platforms.

Moreover, the team discovered that this type of laser systems emits such frequency combs that can be easily applied as integrated transmitters or receivers to efficiently and accurately encode the necessary information. Finally, the researchers were able to find a way to extract and transmit wireless signals from frequency combs produced by the laser system.

Compared to traditional laser systems or laser modules, which allow producing only a single frequency of a laser beam, laser frequency combs create multiple frequencies at one time, evenly located to look similar to the comb teeth. In 2018, it was established that the various frequencies of light from laser beam beat together to produce microwave radiation inside the laser system.

Herewith, the laser system light provokes electrons to vibrate at microwave frequencies, which belong to the communication spectrum. Consequently, it is necessary to encode the required information in the microwave signals and then remove that data from the device, after that the semiconductor laser can be used for Wi-Fi.

The semiconductor laser system includes a dipole antenna for transmitting microwave signals, which were later modulated by the researchers to encode data on the microwave radiation produced by the beating light from the laser beam. Then the microwave signals are radiated out from the laser system with the help of the antenna, and they are received by a horn antenna, filtered and processed by a computer.

The research also allows controlling remotely the semiconductor laser by microwave signals from another device. Herewith, this development remains very promising for wireless communication that still takes a long time while fiber lasers demonstrate great success.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorSemiconductor laser system opens new possibilities in data transmission

New optical laser system for sound

on April 19, 2019

The cost of optical laser systems has largely grown since the moment of its invention. Herewith, lasers become a subject for which scientists are award Nobel prizes, for example, for optical tweezers development or studying of pulsed laser modules. Nowadays a group of researchers from the USA suggests and presents a totally new phonon laser system –  a laser for sound, based on an optically levitated nanoparticles.

Glass_nanoparticle_suspended_in_an_optical_cavityThe researchers use optical tweezer technology invented by Arthur Ashkin, an American scientist and Nobel laureate for the development of a phonon laser system. It should be mentioned that a phonon is considered to be a quantum of energy associated with a sound wave, at the same time optical tweezers allow testing quantum effect limitation and in isolation and taking away physical interference from the environment.

Thus, the researchers decided to study the mechanical oscillations of nanoparticles that are levitated against gravity by the force of radiation at the focus of an optical laser beam created by a high-quality laser module. The fact is the measuring the position of the nanoparticles by identifying the laser system light it emits, and putting that data information back into the laser beam of the tweezer enables to create a laser-like situation.

In this case, the mechanical vibrations obtain more intensity and fall into ideal process synchronization similar to the electromagnetic waves coming from a traditional optical laser system. Compared to light emerging from the sun or from a light bulb, the laser beam is able to overcome pretty long distance without expanding in different directions due to the synchronization of waves from the laser module.

It should be noted that in conventional fiber laser systems, the attributes of the laser system light output are absolutely dependent on the materials from which such a fiber laser is made. It is significant that in the phonon laser system, this principle is reversed because the movement of the material particles is regulated by the optical feedback.

The potential laser applications are sensing and information processing, taking into an account the fiber laser systems have so numerous and still developing fields of applications. Moreover, the phonon laser system is a highly promising development because it allows studying the fundamental quantum physics, and possibly, the laser module opens new possibilities for the engineering of the famous thought experiment of Schrödinger’s cat that is able to be at two places simultaneously.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its own technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorNew optical laser system for sound