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

The Use of Raman Spectroscopy in Food Processes

on November 13, 2018

Over the last decades, a significant amount of research has found that Raman analysis on food and beverage products such as fruits, vegetables, meats, grains, food powders, and oils, is a highly reliable technique Raman systems with the help of the spectral and imaging data analysis techniques continue to advance. The industrial application of this technology may be a realistic option in the near future.

Raman spectroscopy is a versatile and dynamic method that can be used to perform both the qualitative and quantitative analysis for a wide range of samples. In the process of this analysis, a high-energy laser light is exposed to a sample, which will absorb and emit a certain amount of scattered light in the form of incident photons. Raman systems are used to measure the frequency of the scattered photons, whereas quantitative analysis of a sample is achieved by measuring the intensity of the scattered photons.

Some of the most common applications of Raman systems include the analysis of forensic samples, drugs of abuse and carbon materials, as well as samples in the pharmaceutical, cosmetic, biological, and geological industries.

The Use of Raman Spectroscopy in Food ProcessesThe use of Raman systems within the food and beverage industry has been widely used for characterization purposes. It helps for evaluating the safety and quality attributes for a broad range of food and agricultural products. Researchers have investigated more sensitive techniques that can accurately detect pesticides, fungicides, herbicides, and other unwanted chemicals in a product while consumers continue to become more aware of potential contaminants entering their food and beverage products.

Different studies have been published utilizing Raman spectroscopy technology as a method to characterize, discriminate and identify various microorganisms in food products, as well as the ways in which these microorganisms respond to both abiotic and biotic stress. In addition to this, researchers have found that Raman spectroscopy can use as an analytical technique that accurately classified the different bacteria species present within mixed samples.

Optromix Raman fiber optic probes are miniaturized without compromising its performance, which is enabled by the technology of direct deposition of the dielectric filters at the fiber end faces. In results in a small, cost-effective Raman probe for different Raman systems and, for example, for endoscopic and other applications.

The fiber optic Raman probe is produced for multi-wave excitation in the range 690-785 nm and 1000-1064 nm, e.g. @785 nm  – “Fingerprint” spectral range with fluorescence reduction, and @690 nm – “High wavelength” spectral range for conventional Raman spectrometers.

If you would like to buy Optromix Raman fiber optic probes, please contact us at info@optromix.com

 

 

 

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ЕлизаветаThe Use of Raman Spectroscopy in Food Processes

Recent Advances in Stimulated Raman Scattering (SRS) Aimed at Development in Metabolic Imaging

on October 31, 2018

The Harvard University researchers developed stimulated Raman scattering (SRS) which based on standard Raman systems. This development amplifier the weak spontaneous Raman signal by >10 000X, which enables video-rate (30 frames/s) chemical imaging.

Raman imaging uses an excitation laser to raster-scan tissue and determines its chemical composition based on the spectroscopic properties of its component molecular bonds. This technique leaves biological specimens intact and frees researchers from the need to strain them. Raman imaging generates a point-by-point 3D depiction of the specimen.

While traditional Raman systems provide wonderfully specific chemical analysis, its extremely weak signal is limiting. It requires the use of high-concentration species and plenty of time, from minutes to hours.

Stimulated Raman scattering has been developed along various lines and enabled same exciting science, including the ability to map the inner workings of living cells. Researchers at Columbia University combined SRS with the chemical tracer D₂O (“heavy water”) to enable visualization of metabolic activities.

D₂O is made by swapping the hydrogen atoms in standard water with deuterium. It looks and tastes like regular water and is safe to drink in small doses. The deuterium forms chemical bonds with carbon that vibrate at varying frequencies when illuminated. So they are able to identify macromolecules like proteins, lipids, or DNA, and also use the frequency signatures to track their growth in vivo, in the brain, skin, and other organs. The new method makes it possible to visualize subcellular changes in real time, in vivo.

Potential applications of the technique include quick and precise tumor removal and detection of head injuries and developmental metabolic disorders. The experiments also offered numerous insights into all development and aging. SRS will continue to increase in power and capability. This type of imaging is essential to understanding biological processes, so it promises further advances in bioscience.

Recent Advances in Stimulated Raman Scattering (SRS) Aimed at Development in Metabolic ImagingOptromix Raman fiber optic probes are miniaturized without compromising its performance, which is enabled by the technology of direct deposition of the dielectric filters at the fiber end faces. In results in a small, cost-effective Raman probe for different Raman systems and, for example, for endoscopic and other applications.

The fiber optic Raman probe is produced for multi-wave excitation in the range 690-785 nm and 1000-1064 nm, e.g. @785 nm  – “Fingerprint” spectral range with fluorescence reduction, and @690 nm – “High wavelength” spectral range for conventional Raman spectrometers.

If you would like to buy Optromix Raman fiber optic probes, please contact us at info@optromix.com

 

 

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ЕлизаветаRecent Advances in Stimulated Raman Scattering (SRS) Aimed at Development in Metabolic Imaging

Fiber Lasers for Defensive Military Applications

on October 22, 2018

Lasers have been a mainstay of sci-fi battles for many years. Nowadays private contractors and government agencies have developed weapons systems that are making science fiction a reality. There are multiple laser-based weapon prototypes that are being developed and tested, some of which have already proven to be effective at slaying military drones.

Fiber Lasers for Defensive Military ApplicationsThe reason behind the efforts to develop laser-based weapon systems is multiple advantages that laser systems offer. Laser-based systems will not require ammunition; instead, they rely on power. An important advantage of laser systems is their high power level and high speed; these characteristics allow for effective combat performance. Lasers are also silent and invisible which is important for stealth operations. However, there are still challenges with the development of laser-based weapons, one of them being the design of a laser system that is compact enough to be used in live combat situations. To be practical, lasers need to be compact, lightweight, and transportable. Laser weapons work by applying intense heat to the target, destroying or damaging it. High power fiber lasers are needed to produce enough heat. The most recent laser weapons utilize fiber lasers that can be easily adjusted by adding or removing individual lasers from the combined beam.

Fiber lasers are at the forefront of not only military applications, but many other areas, like photomask repairing, micromachining, optic sensing, LIDAR, etc. It is important to find the right fiber laser vendor that is able to manufacture fiber laser systems for a specific purpose.  Fiber lasers are used in LIDAR systems for accurate and precise construction of high-resolution maps, laser guidance, airborne laser swath mapping, laser altimetry. The most common fiber lasers that are used for high-resolution mapping are 1550 nm fiber lasers as they are eye-safe at high power levels and precise. They provide accurate images over long distances which makes them an ideal solution for mapping and laser guidance.

Optromix is a fiber laser vendor, which develops and manufactures a broad variety of fiber lasers, СО₂ lasers, Ti: Sapphire lasers, dye lasers, and excimer lasers. We offer simple erbium laser and ytterbium laser products, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry.

We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.

If you would like to buy Optromix scientific laser systems, please, contacts us at info@optromix.com

 

 

 

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ЕлизаветаFiber Lasers for Defensive Military Applications

Bioimaging With Femtosecond Lasers

on October 21, 2018

The development of fiber optic technology, including fiber laser systems, has been noticed and used in many applications. Ultrashort femtosecond lasers may provide benefits for medical bioimaging and diagnosis, particularly for noninvasive biopsy. However, the ability of femtosecond laser irradiation to produce bio damage in the living body is still a concern. Recently, researchers have found that ultrashort light pulses that are produced by femtosecond fiber lasers can be utilized in a variety of new biomedical imaging modalities. There are several techniques that utilize the high peak power that is possible with ultrashort pulses. The pulses can be focused to high intensity to drive nonlinear-optical processes, e.g. multiphoton absorption in molecules used as fluorescent labels.

Some biologically-important substances, like lipids, nucleic acids, sugars, etc. have characteristic vibrational spectra which can be distinguished easily. The generation of images with chemical contrast is possible through the use of microscopy with vibrational spectroscopy. The imaging is a basis of coherent Raman scattering (CRS) microscopies. It allows detecting the presence of certain substances without the use of exogenous dyes.

The development of femtosecond fiber lasers has been a big step in achieving new advances in nonlinear microscopy. Femtosecond fiber lasers have enabled dramatic growth of multiphoton and harmonic-generation imaging. This can be explained by various benefits that fiber lasers offer:

  • the waveguide medium eliminates the need for precise alignment and makes long cavity length possible;
  • fiber lasers offer high beam quality, which is extremely valuable for many areas of fiber laser applications;
  • fiber gain media are efficient and can adequate levels of power for bioimaging;
  • fiber lasers are naturally suitable for integration with endoscopic instruments.

Recently developed femtosecond fiber lasers outperform traditionally used solid-state lasers. Femtosecond fiber lasers are already used as an alternative to solid-state lasers in many different applications, and the research that is being put into the further development of femtosecond lasers means that they will continue to replace solid state lasers.

We believe in developing a real sense of partnership with our customers. We are committed to understanding our customer’s needs and providing them with a broad variety of fiber lasers, СО₂ lasers, Ti: Sapphire lasers, dye lasers, and excimer lasers. We offer simple erbium fiber lasers and ytterbium fiber lasers, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry. We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are of high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.

If you are interested in Optromix femtosecond lasers, please contact us at info@optromix.com

 

 

 

 

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ЕлизаветаBioimaging With Femtosecond Lasers

Latest Advances in Fiber-Based High Power Fiber Lasers

on October 10, 2018

Over the past decade, the rise output power from rare-earth-doped fiber sources has been dramatic thanks to the use of cladding-pumped fiber architectures. This led to a range of fiber-based devices with outstanding performance in terms of output power, beam quality, overall efficiency, and flexibility with regard to operating wavelength and radiation format.

High power fiber lasers are much more progressive and promising than traditional lasers using solids or gases as the active medium in many aspects. The fiber laser is a laser that uses an optical fiber as the active medium, which is usually has a rare-earth-doped core. The major active element used in the fiber lasers for material processing is ytterbium. This element provides light absorption (available for pumping) at wavelengths of 900-1000 nm, and fluorescence that causes laser oscillation lies at 1000-1100 nm. The high quantum efficiency of ytterbium serving as the active element leads to 60-70% efficiency in energy conversion from pump light to laser light. In virtue of these factors, laser systems on the basis of the optical fiber achieve a high output power with a high energy conversion efficiency while maintaining a high beam quality. Owing to the very high energy conversion efficiency and a resonator consisting of fine fiber and small optical components, high power fiber lasers have a far smaller heat dissipation mechanism and power supply, and thus far smaller overall dimensions and weight than traditional high power lasers. Also, it should be noted, such lasers constructed by fusion-splicing optical fibers are not influenced by vibration, shock, or temperature changes, and therefore have stable output power and stable high beam quality. Besides the above-mentioned factors, high power fiber lasers are practically maintenance-free due to the fact that the paths of the beam are not exposed to the atmosphere.

Latest Advances in Fiber-Based High Power Fiber LasersHigh power fiber lasers are advantageous to many industries, especially material processing that includes laser cutting, laser engraving, laser welding, etc. There is no need to couple the laser output to a fiber in order to direct it where it needs to go as the lasing is occurring in the fiber. Therefore, the need for complicated optical setup is removed. The laser output is very straight and doesn’t spread out – as it is being created in a relatively confined area of the core. The power of the laser beam is confined to a small spot size, which is important for material processing applications. Moreover, high power fiber lasers are efficient with 70-80% power conversion,  which implies fiber lasers are easy to cool as not a lot of energy is lost to heat compared to other high power lasers. High power fiber lasers have a long operating life of around 1 million hours, high peak power and a long pulse duration; these characteristics are essential for high-speed marking and cutting applications.

Over the last decade, the performance advanced in high power fiber lasers have been particularly impressive. It is making high power fiber lasers a successful, fast increasing commercial business currently worth $800 M/year, with a compound annual growth rate of about 13%, which is the highest among the different laser technologies. The fiber technology has grown quite diverse and mature and can provide an excellent platform for fabricating result, high-performance laser systems.

Optromix is a fiber laser manufacturer that develops cutting-edge laser systems and new fiber optic technologies. We produce unique fiber laser scientific systems and specialize in single frequency fiber laser products. We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility. Our company is constantly developing new laser systems that can potentially be used for fiber laser powered solar sails.

If you are interested in Optromix high power fiber lasers, please contact us at info@optromix.com

 

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ЕлизаветаLatest Advances in Fiber-Based High Power Fiber Lasers

Tunable Fiber Lasers Enable Optimized Industrial Applications

on October 1, 2018

Fiber lasers in the 2-6 kW range have become workhorses for many fabrication shops. Such lasers offer faster and more precise cutting of thin metal than legacy cutting technologies like carbon dioxide lasers and plasma torches. A metal cutting market, for instance, is dominated by different types of fiber lasers due to their unmatched combination of productivity, precision, and cost-effectiveness.

The distinctive feature of the tunable fiber laser is a wavelength of operation, which can be altered in a controlled manner. Only several types of fiber lasers allow continuous tuning over a significant range. Tunable fiber lasers are usually operating in a continuous way with a small emission bandwidth, although some Q-switched and mode-locked fiber lasers can also be wavelength tuned. There are many types and categories of tunable fiber lasers such as excimer fiber lasers, gas fiber lasers (CO₂ lasers, He-Ne lasers, and suchlike), dye fiber lasers (liquid and solid state), semiconductor crystal and diode lasers, and free electron lasers. Tunable fiber lasers find applications in spectroscopy, photochemistry, atomic vapor laser isotope separation, and optical communications.

Tunable Fiber Lasers Enable Optimized Industrial ApplicationsPrices for fixed and tunable fiber lasers are not yet equivalent, however. Although some tunable types are priced like fixed-wavelength devices, they are tunable over only very narrow ranges, about 3-4 nm. Those fiber lasers that can be tuned across wide wavelength ranges remain at least two or three times as expensive as their fixed counterparts. Such high price on tunable fiber lasers is explained by specific features: the increased complexity of manufacturing them, the extra testing required, and the newness of the technology, which has yet to reach true volume demand. As demand for tunable lasers rises, their prices will come down. Laser manufacturers claim the price premium for a widely tunable laser will drop to about 15-20 percent above that of a fixed laser anyway.

The significantly favorable changes in demand for tunable fiber lasers will occur in parallel with their application to make optical networks more flexible. Nowadays fiber optic networks based on different types of fiber optic devices are essentially fixed: the optical fibers are connected into pipes with huge capacity but little reconfigurability. It is almost impossible to change how that capacity is deployed in real time. In addition to this, there is a problem in choosing a wavelength for a channel: as traffic is routed through a network, certain wavelengths may be already in use across certain links. Tunable fiber lasers will ease a switch to alternative channels without swapping hardware or re-configuring network resources. The benefits gained from a use of tunable fiber lasers are in the time it takes to actually deliver different types of services. Undoubtedly, tunable fiber lasers can dramatically improve fiber optic networks efficiency and will play an important role in enabling future dynamically reconfigurable optical networks, along with optical switches and semiconductor optical amplifiers.

Optromix Inc., headquartered in Cambridge, MA, USA, is a manufacturer of laser technologies, optical fiber sensors, and optical monitoring systems.

We develop and manufacture a broad variety of fiber lasers, СО₂ lasers, Ti: sapphire lasers, dye lasers, and excimer lasers. We offer simple erbium laser and ytterbium laser products, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry.

We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.

If you are interested in fiber laser systems, please contact us at info@optromix.com

 

 

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ЕлизаветаTunable Fiber Lasers Enable Optimized Industrial Applications

A Modern Designed Fiber Bragg Grating Pressure Sensors for Civil Engineering

on September 25, 2018

A Modern Designed Fiber Bragg Grating Pressure Sensors for Civil EngineeringThis year a modern fiber Bragg grating pressure sensor with an adjustable measurement range and high sensitivity was developed to measure earth pressures for civil infrastructures. The new fbg pressure sensors is a combination of a cantilever beam with fiber Bragg grating (FBG) sensors and a flexible membrane. Such fbg pressure sensor has a larger measurement range than a conventional pressure transducer with a dual diaphragm design and shows high accuracy. The novel fiber Bragg grating pressure sensor has numerous potential applications in soil pressure measurement.

An understanding of soil pressure is essential to safety design and performance evaluation as much of the world’s infrastructure, such as high buildings, tunnels, dams, and subways, is built on the soil. Many disasters have occurred due to a lack of understanding of soil pressure during construction. Soil pressure is also responsible for the long-term deformation, such as the settlement of the Pisa Tower. In connection with a fact that soil is made up of particles, water, and air, pressure measurement in the soil mass is a crucial task for civil engineers. In the last couple of decades, fiber optic sensors have developed rapidly and show great potential for use in civil engineering. Fiber Bragg grating (FBG) is one of the most widely used fiber optic sensors technologies due to its high accuracy and inexpensive data interrogation. Such fiber Bragg grating pressure sensors have many advantages, such as high accuracy and a high resolution, a tiny size, and resistance to EMI in comparison with electrical systems, micro-electro-mechanical systems (MEMS), and piezoceramic sensors.

Plus fbg pressure sensors can be connected into series in a single fiber.

The measurement accuracy and range are critical criteria for civil engineering end-users. Scientists and engineers have made great efforts to improve the measurement accuracy. The most common configuration of soil pressure sensors used transducer is a flexible diaphragm with a steel chamber. Also, many earth pressure sensors used today are based on the dual diaphragm design. Such diaphragm design is simple and easy to fabricate. However, it should be noted, it has two limitations:

  • the highly non-uniform strain distribution on the surface of the dual diaphragm
  • the lower diaphragm has limited deflection

The newly designed fbg pressure sensors overcome the aforementioned limitations by transferring the deflection. A new design for fbg pressure sensors based on a combination of a diaphragm and a cantilever beam. This method is expected to overcome the limitations of dual diaphragm fbg pressure sensors. It has the following advantages:

  • An automatic temperature compensation
  • A larger measurement range than dual diaphragm fiber Bragg grating pressure sensor
  • A measurement accuracy is higher
  • It is unaffected by the non-uniform strain distribution of the membrane

Such fiber Bragg grating pressure sensors are ideally suited for strain measurement. The use of fiber optic technology for the monitoring of different smart structures is very promising and the future is sure to bring further advancements and improvement.

Optromix is a fast-growing vendor of fiber Bragg grating (FBG) products line: fiber Bragg grating sensors, FBG interrogators, and multiplexers, Distributed Temperature Sensing (DTS) systems. We create and supply a broad variety of top-notch fiber optic solutions for the monitoring of various facilities all over the world.

If you are interested in Optromix FBG sensors or other fiber optic products, please contact us at info@optromix.com

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ЕлизаветаA Modern Designed Fiber Bragg Grating Pressure Sensors for Civil Engineering

Fiber Lasers Could Satisfy Current Aerospace Demands

on September 20, 2018

Fiber Lasers Could Satisfy Current Aerospace Demands Aerospace manufacturers are more and more often turning to fiber lasers to resolve their manufacturing challenges. The aerospace industry is engaged in development in such areas as commercial aircraft, military defense, and space exploration. Fiber lasers offer improved energy efficiency, smaller machine footprint, lower maintenance requirements, improved machine lifetime, and faster cycle times for high-volume production in comparison to traditional manufacturing processes like resistance spot welding or conventional laser welding. Fiber lasers can easily achieve output power in the range of 1 W to > 10 kW, or function as ultrafast pulsed energy sources.

Today conventional laser systems such as continuous wave (CW) and nanosecond pulsed lasers dominate the aerospace fabrications. CO₂ laser is the earliest type of laser which used in aerospace manufacturing. Such lasers operate at continuous mode with a wavelength of 10,6 μm. Nd: YAG lasers are primarily of the pulsed type. The wavelength is in the near-infrared at 1,06 μm. Nd: YAG pulsed lasers are currently used for laser drilling at aerospace companies, but now fiber lasers offer a wide range of advantages over this current lasers.

The agility of operation of fiber lasers is far superior compared to Nd: YAG pulsed lasers. This is explained by the highly responsive diodes in the optical fiber. Among fiber lasers, ytterbium lasers are the most cost-effective for high power applications in aerospace manufacturing. Ytterbium fiber lasers operate at the wavelength of 1,07 μm.

Fiber lasers and laser systems based on them create a perfect square wave due to the responsiveness of diode-pumping. The fiber laser can drill holes with one 10 ms pulse with its square-wave temporal profile. Furthermore, fiber lasers deliver all of the energy above the threshold thanks to their top-hat profile. It is proved that with this beam profile, less energy is required in the pulse to produce the same drilling result. In addition to this, the resulting spot size of the Nd: YAG pulsed lasers can change as the power is increased or decreased, which requires a readjustment of focus to obtain the appropriate hole diameter. Fiber lasers’ spot sizes never change as the power is increased or decreased.

The ease of integration into a machine tool or robotic drilling cell is a key advantage of fiber laser systems. It becomes a simple task to retrofit to an existing work cell or a new work cell with the energy delivered through a fiber optic cable.

In recent years fiber laser manufacturers in the aerospace industry pay special attention to ultrafast lasers. Almost all kinds of materials break down instantaneously under ultrafast laser irradiation. At the extremely high peak power, defects induced by thermal heating, such as burr and heat affected zone, is minimized. The growth of the popularity of ultrafast lasers in the aerospace industry is driven by two factors:

  • The introduction of new materials and new designs requires new manufacturing techniques
  • Ultrafast lasers are viable for macroscale material processing thanks to their increasing output power

Optromix is a fiber laser manufacturer that develops cutting-edge laser systems and new fiber optic technologies. We produce unique fiber laser scientific systems and specialize in single frequency fiber laser products. We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility. Our company is constantly developing new laser systems that can potentially be used for fiber laser powered solar sails.

If you are interested in Optromix fiber lasers and fiber laser systems, please contact us at info@optromix.com

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ЕлизаветаFiber Lasers Could Satisfy Current Aerospace Demands

What Laser to Choose for Your Laser Marking Application?

on September 13, 2018

What Laser to Choose for Your Laser Application?How to make the right decision when choosing the best laser for a marking application? An understanding of the laser characteristics and the material properties is essential to making an optimal choice. In laser marking processes, the type of material, quality of mark required, and speed will all play a role in the optimum choice of a laser.

There are several technology options when choosing a pulsed laser for marking:

  • Nd: YAG

The Nd: YAG laser was introduced more than 25 years ago and is the workhorse of the industry. One advantage of Nd: YAG lasers are their high beam quality, which leads to a smaller spot size of the laser: the small spot size, along with short pulses, produces high peak power that can be beneficial in deep engraving with crisp, clear marks and small characters.

  • Nd: YVO4 (vanadate)

The vanadate laser can emit at three different wavelengths: 1064, 532 (green), and 355 (blue) nm. Such lasers deliver high beam quality with pulse-to-pulse stability too. It makes them well suited for ablation marking and heat-affected zone (HAZ) applications.

Fiber lasers do not have the same beam quality as Nd: YAG or vanadate lasers, which limits the amount of peak power available. The fiber laser can anneal stainless steel due to its long pulse width and larger spot size, putting more heat in the part to draw the carbon to the surface. Not so many fiber laser manufacturers offer the laser source to a third party for integration into a marking system.

One major benefit of ytterbium-doped fiber lasers is that the near-infrared 1070 nm wavelength emitted is dose enough to the 1064 nm wavelength of neodymium-doped Yttrium aluminum garnet (Nd: YAG) lasers as to make no difference during the actual process of laser marking. This made for a relatively easy replacement of continuous wave Nd: YAG lasers by fiber lasers for most marking applications.

It is also important to understand how the material to be marked absorbs laser light at the wavelength of the laser chosen. Ferrous and non-ferrous materials have excellent absorption at 1064 nm, while precious metals do so at 355 and 532 nm. Plastics also absorb the higher wavelength laser output. In terms of operating costs and consumables, these three laser systems are almost identical, so an end user can choose the optimum laser technology without having to make cost tradeoffs.

The most common terms used in laser marking include engraving, annealing, ablation, and color change of plastics.

All three laser technologies will have a place in industrial manufacturing for years to come. The technology will continue to evolve in order to meet the changing demands of the manufacturing environment.

Optromix Inc., headquartered in Cambridge, MA, USA, is a manufacturer of laser technologies, optical fiber sensors, and optical monitoring systems. We develop and manufacture a broad variety of fiber lasers, СО₂ lasers, Ti: Sapphire lasers, dye lasers, and excimer lasers. We offer simple erbium laser and ytterbium laser products, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry.

We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are of high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.

If you are interested in Optromix fiber laser systems, please contact us at info@optromix.com

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ЕлизаветаWhat Laser to Choose for Your Laser Marking Application?

Visible Fiber Lasers Range Expands

on September 4, 2018

Over the past decade, visible-wavelength fiber lasers (often called visible fiber lasers) established their presence in the commercial laser arena. The term visible lasers is used to denote lasers emitting visible light, or sometimes laser systems or devices generating visible light via nonlinear frequency conversion. In other words, visible light can be obtained from a near-infrared-emitting by external frequency conversion: for instance, Raman-shifting, frequency-doubling, frequency sum-mixing, or combinations of these approaches. Visible fiber lasers have uses ranging from science, industry (especially material processing) to general laser use.

Visible Fiber Lasers Range ExpandsThe origins of visible fiber lasers are as varied as the companies that produce these devices. For example, MPB Communications supplies Raman amplification subsystems to the fiber optic communications industry. MPBC launched the first visible fiber laser at a 560 nm wavelength at SPIE Photonics West in 2006. The laser was soon adopted for flow-cytometry applications at NIH National Cancer Institute (Bethesda, MD). Nowadays MPBC produces visible-wavelength fiber lasers and based on them scientific laser systems with 26 commercial wavelengths from 488 to 755 nm and with powers ranging from 0.2 to 5W, depending on the application needs.

Azurlight Systems (Pessac, France) designs and manufacturers visible-wavelength fiber lasers by frequency-doubling fundamental IR fiber lasers. Specific specialty fibers have been developed that have explained ytterbium (Yb) gain bandwidth down to 976 nm (1030 nm being the traditional lower limit). This has enabled the company to open up visible-wavelength average into the blue region of the optical spectrum.

Visible fiber lasers are an advantage for the material processing that has a higher absorptance in the visible than in the IR. Some metals, such as copper and gold, have an absorptance several times higher in the green than at the fundamental IR wavelength. Copper, in particular, is widely used in electronics.

Visible-wavelength fiber lasers and laser systems are used for various applications, including cinema projection, displays, material processing, and biophotonics. In scientific laser systems such as atom trapping, atomic clocks, sodium guide stars, and quantum optics, it is common that an exact wavelength with extremely narrow linewidth is required. High-power laser sources based on amplified single-frequency sources such as DFB laser or distributed Bragg reflector (DBR) fiber laser. Future development of frequency-converted fiber lasers will require that development of nonlinear materials “catch up” with the progress in fiber lasers. While fiber lasers are already generating kilowatt-level powers, few nonlinear materials are currently able to handle hundreds of watts of visible and infrared power.

Optromix has a line of tunable fiber lasers that includes a single-mode CW visible fiber lasers tunable over a wide range in the green (515-562 nm). The linewidth of the laser can be tailored by the company for the user from options of 0.01, 0.05, 0.1, and 0,3 nm. Applications include biotechnology, spectroscopy, and holography.

Optromix Inc., headquartered in Cambridge, MA, USA, is a manufacturer of laser technologies, optical fiber sensors, and optical monitoring systems.

We develop and manufacture a broad variety of fiber lasers, СО₂ lasers, Ti: Sapphire lasers, dye lasers, and excimer lasers. We offer simple erbium laser and ytterbium laser products, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry.

We manufacture lasers using our own technologies based on the advanced research work and patents of international R&D team. Laser processes are high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility.

If you are interested in Optromix fiber lasers, please contact us at info@optromix.com

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ЕлизаветаVisible Fiber Lasers Range Expands