Tag: laser beam

Fiber laser systems are considered to be a type of diode-pumped solid-state laser system that applies a doped core of standard optical fiber as the amplification medium. The thing is that fiber lasers consist of a fiber optic cable with a core doped with various rare earth elements.

It should be noted that these elements are chosen and then installed into the ultra-pure optical fiber core to obtain a required laser beam wavelength and power. Therefore, the pump diodes emit the laser beam light, which in turn raises the rare earth ions installed in the doped optical fiber core.

Additionally, the fiber laser system has fiber Bragg gratings which are located at each end of the optical fiber leading to the amplification of the laser beam light. It should be noted that “one of the gratings has a lower reflectivity than the other, which enables the laser beam light which has been produced in the cavity (amplifying medium) to exit the optical fiber.”

It turns out the laser beam spreads through the fiber of high power and out of the laser system. To be more precise, a doped optical fiber core operates as the amplification medium in fiber lasers, while diodes are regarded as pumps. Herewith, several semiconductor diodes are installed into the optical fiber to make the fiber operates as the amplifying medium.

Usually, there are multiple pump diodes in the fiber laser, and the laser beam light emitted by the pump diodes goes through a pump combiner to raise the active element in the core of the optical fiber. All fiber laser systems include the following components:

• Doped optical fiber

This type of optical fiber looks like a cylindrical strand made of highly pure silica glass. They allow directing the laser beam by reflecting the light as it goes through the fiber.

• Double-clad fiber

Fiber lasers generally apply double-clad fiber with a core of the rare-earth dopants. A traditional single-mode optical fiber provides the laser beam quality characteristics necessary to laser system manufacturers.

• Ytterbium (Yb) optical fiber

This material is considered to be the most common rare-earth element, herewith, it provides pretty good laser beam light absorption.

• Pump laser diodes

Laser system diodes are compact efficient tools that modify electrical energy to the laser beam light. The brightness and spectral qualities enable to pump the optical fiber.

• Pump combiners

These passive devices additively enlarge the output power of the pump sources employed to raise the doped ions.

• Fiber Bragg gratings

FBG is a type of distributed reflector that is written on a small part of optical fiber. It blocks specific wavelengths or operates as a wavelength-specific reflector.

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 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

Laser systems change the size of the melt pool in the 3D printing process, therefore, opening the magnetic qualities of the deposited steel. A team of researchers from Switzerland has presented new fiber laser technology that allows overcoming a supposed disadvantage of laser beam-based additive manufacturing of specific materials that produces new alloys with various qualities employed in 3D printed metallic workpieces of high accuracy.

To be more precise, the researchers develop a metallic chessboard 4 mm on a side, where the magnetic checkerboard squares follow nonmagnetic parts. To create such a laser system, it is necessary just to change laser beam power and duration to reverse the metal’s process microstructure leading to the ferromagnetic checkerboard.

Moreover, a type of stainless steel developed some 20 years ago has been used in the development of the new fiber laser system. It should be noted that the steel used includes no nickel and around 1% of nitrogen, herewith, this metal is considered to be non-allergic, therefore, it can be applied in the medicine. The thing is that steel is regarded as a material that is not suitable for 3D laser beam printing because the temperature fastly achieves the melting limit of the laser beam leading to the evaporation of the great part of the nitrogen peaks and the change of steel qualities.

Thus, the disadvantage of 3D printing performed by the fiber laser has been overcome by changing the scanning speed of the laser system and the intensity of the laser beam that allows melting the particles in the metal powder bed modifying he size and lifetime of the liquid melt pool in a specified way. The fiber laser system operates as the laser beam light source emitting at a 1070 nm wavelength at a maximum power of 200 W in a spot size of 55 μm. 

The researchers claim that during 3D printing the fiber laser enables to achieve temperatures of more than 2500°C locally that is why it is now possible to vaporize different components of an alloy in a targeted way (manganese, aluminum, zinc, carbon, and other) – it locally modifies the chemical composition of the alloy. Additionally, fiber laser technology can be promising for many other alloys, not only for stainless steel.

The application of 3D laser beam printing promotes the creation of structural components that react locally and in a staggered way to various temperatures. Finally, the ability of fiber lasers to create various alloy compositions with micrometer accuracy is regarded as highly promising in the design of more efficient electric motors.

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 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

A team of researchers from the US has developed the physical process that allows producing laser systems from 2D materials. Thus, this fiber laser technology promotes the discovery of a fiber optic system for providing optical gain in 2D materials at much lower density levels than conventional semiconductors. This fiber laser system can offer an alternative to standard semiconductors and play a crucial role in game-changing for energy-efficient photonic tools.

It should be noted that previous experiments demonstrate that laser systems can be made from 2D materials as thin as a single layer of molecules. Herewith, other researchers had designed these fiber lasers at cryogenic temperatures, the other team used room temperature. The standard technique of laser physics supposes that it is unreal to create laser systems with a very low amount of laser beam power being pumped into a 2D semiconductor.

To be more precise, the researchers use a new gain fiber optic technology including charged excitons or trions in an electrically gated 2D material well below the Mott density. “After examining the signatures of optical gain and their relationship with excitons and trions, the researchers were able to clearly identify the origin of optical gain as being trionic in nature.”

The thing is that the thinness of the 2D materials, electrons, and holes tighten each other hundreds of times stronger than in standard semiconductor laser systems. Moreover, this strong charge connection in fiber lasers makes excitons and trions very stable, especially at room temperatures. The fiber laser technology enables the researchers to discover the balance of the electrons, holes, excitons, and trions and monitor their conversion to reach optical gain at very low levels of density.

The laser beam power required to reach Mott transition — the process by which excitons form trions and conduct electricity in semiconductor materials to the point that they reach the Mott density — is essential for the future processes. The absence pf new abilities provided by the laser system lead to the necessity to use a small power station to operate one supercomputer.

The combination of optical gain with low levels of laser beam power input leads to the development of future amplifiers and fiber lasers, which need a small amount of driving power. Although the researches result in new fiber laser technology that researchers can use to design low-power 2D laser systems, the team doubt if this is the same mechanism that led to the production of their 2017 nanolasers.

The improvements in such fiber optic systems continue. It is planned to examine how the fiber laser technology of optical gain works at various temperatures, and how to apply it to create nanolasers for a promising purpose. Finally, the team claims that their next step is considered to be a development of laser systems that can operate specifically employing the new mechanisms of optical gain.

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 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

Recently, a team of scientists has presented the world’s first metasurface fiber laser system that allows emitting “super-chiral light” that is considered to be a laser beam light with ultra-high angular momentum. Herewith, such a light produced by a fiber laser can be applied as a type of “optical spanner” to or for encoding information in optical communications.

The ability of laser beam light to carry angular momentum allows being transferred to matter. It should be noted that the more angular momentum created by the light leads to the possibility of more transfer. Therefore, the laser beam light acts as an optical spanner. The new fiber laser creates a new high purity “twisted light” not offered from laser technology before, containing the highest angular momentum reported from a laser. 

At the same time, the team has designed “a nanostructured metasurface that has the largest phase gradient ever produced and allows for high power operation in a compact design.” Thus, it is a world-first fiber laser system for creating exotic states of twisted structured laser beam light, on-demand. 

Scientists have already demonstrated their new fiber laser technology to emit any required chiral state of laser beam light, with full monitoring over both angular momentum elements, the spin (polarization), and orbital angular momentum of light. As for the design of the presented laser system, it becomes real by the complete control provided by novel nanometer-sized metasurface within the fiber laser.

Herewith, the metasurface consists of numerous small rods of nanomaterial, which changes the laser beam light as it passes through. The thing is that the laser beam light passes through the metasurface numerous times, obtaining a new twist every time it does so. The result of such a fiber laser system means the production of new types of chiral laser beam light not offered by lasers until now, and full monitoring of light’s chirality at the source, overcoming current challenges.

To be more precise, the developed laser system applies a metasurface to fill laser beam light with ultra-high angular momentum, resulting in an unprecedented change in its phase while also monitoring the polarisation. Herewith, “by arbitrary angular momentum control, the standard spin-orbit symmetry could be broke, for the first fiber laser to create full angular momentum control of laser beam light at the source.”

The team has developed the metasurface for the laser system made from carefully crafted nanostructures to cause the required effect, it is also considered to be the most extreme OAM structure so far produced, with the highest phase gradient yet reported. Finally, they got a fiber laser system that allows influencing OAM states of 10 and 100 simultaneously for the highest reported AM from a laser to date. Additionally, the fiber laser creates all prior OAM states reported from custom structured laser beam light lasers.

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 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

Fiber laser cutting machine finds widespread application in the industrial areas, therefore, it can be used in numerous places. Herewith, in the industrial area, the efficiency of the fiber laser cutting machine plays an essential role because its absence influences the cutting process. Nevertheless, it is possible to increase the efficiency of the fiber laser system for cutting.

To be more precise, laser systems for cutting are widely applied in all fields of life. Numerous companies prefer using fiber laser cutting machines for a few years but their efficiency and cutting ability continue decreasing. The possible reason for the decrease in cutting performance is the influence of focus position on the cutting process. Herewith, the diameter of the focal spot has to be as tiny as possible to create a narrow slit. For instance, if the performance of the fiber laser system for cutting is decreased, the cutting speed of the focus position can be tuned. 

It should be noted that the cutting speed of the laser system has a direct connection with the laser beam power, the larger power leads to the higher cutting speed. Such properties as the distance between the workpiece and the nozzle also influence the effect. “Too far distance will cause energy waste, while too close distance will affect the dispersion of the splashed cutting products.” Usually, the proper distance of the laser beam is considered to be 0.8 m.

The thing is that the laser beam power of fiber laser cutting machines decreases that directly linked to the cutting performance. Moreover, inappropriate operation, long-term load production, long-term maintenance, etc. will result in the performance degradation of the fiber laser system for cutting, consequently, reducing effect discount. Thus, it is inescapable to avoid the performance decrease of the laser system cutting.

The potential solution for fiber lasers to avoid the decline includes:

• Careful attention to the maintenance of cutting machines.

Since the processing time of fiber laser cutting machine is quite long, almost all their parts wear, therefore, its performance suffers and leads to frequent replacement of vulnerable parts, as well as cleaning of optical elements and regular oil of bearings to keep driving flexibility and machining precision.

• Standardization of laser system cutting operation.

The fact is that fiber laser systems for cutting processes require the operation of specially qualified personnel. It is essential to correctly perform the sequence of the switch machine, to be familiar with the buttons of each switch panel, to correctly operate the fiber laser cutting machine, etc. Thus, the operation by professionals plays a crucial role in the normal operation of laser systems for cutting and also decreases the probability of safety accidents.

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 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

In the last 60 years, fiber laser systems have reached great successes, herewith, almost all features have resulted in a very high level. Now fiber lasers find their applications in numerous areas such as materials science, bio-imaging, communications, energy sciences, industrial processing, fundamental physics, etc.

Today researchers study the most critical and potentially productive questions in fiber laser technology that include the growth in power (peak power and average power as well) that greatly moves forward and opens new applications of laser systems. Additionally, compact and portable space-based laser technology is accessible in various applications.

For instance, researchers from China have launched the station of extreme light projects, the large ultra-intense fiber laser being built in China. Nowadays “most of the engineering designs have been finished, and the front end of the facility, which can be regarded as a small prototype of the laser system facility, is being developed.” This project includes a 100-PW fiber laser system that will be created, which can offer a focused intensity of more than 1023 W/cm2.

Moreover, this fiber laser is able to operate with a hard X-ray for pump-probe tests, for example, experimentally verifying the vacuum birefringence phenomenon. The laser technology is based on optical parametric chirped-pulse amplification as a crucial advantageous technology that plays a highly important role. The thing is that compared to standard Ti: sapphire, the new laser system offers broader bandwidth, higher single-pass gain, and less thermal effect, which provides higher-energy amplification with shorter compressed laser beam pulse durations.

Herewith, the 100-PW  fiber laser system has a higher single-pass gain and related shorter optical distance that is advantageous for coherent laser beam combination and micrometer precision levels. The fiber laser technology provides an application of strong fields offered by laser beams to break down and explore the quantum vacuum. 

It should be noted that vacuum QED is considered to be one of the most promising applications for the fiber laser facility, and the collision of the 100-PW laser system and XFEL laser beams to examine the vacuum birefringence effect is regarded as the “day-one” experiment. Also, the creation of high-energy particles and radiation can become another very interesting application.

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 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