Tag Archives: pump combiner

Work Theory of the Laser Cutting Machine(2)

Cutting methods of laser cutting machine Vaporization cutting It means that vaporization is the main way to remove the processed material. In the process of vaporization cutting, workpiece surface is heated to vaporization temperature quickly by focused laser beams, forming … Continue reading

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Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers(9)

6. Demonstration of 440 W pump power handling After detailed theoretical and experimental characterization of fiber pump combiners with multiple pump ports, a pump power handling performance test was conducted. For these investigations each pump port of a 4 + … Continue reading

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Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers(8)

Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers(8) 5.2 Simulations of the loss mechanism caused by additional pump ports As already discussed, the total power loss is comprised of TP, PAA and PCT. Since a TL … Continue reading

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Fiber Laser Welding: Some Traits and Applications(2)

Technological parameter of laser welding: (1) Power density Power density is one of the key parameters in laser processing. When the power density is relatively high, the surface would be heated to boiling point in microseconds, thus generate mass vaporization. … Continue reading

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Fiber Laser Welding: Some Traits and Applications(1)

What is fiber laser? The world’s first laser beam is produced in 1960 by the use of flashbulb stimulating ruby crystalline grain. Limited by the thermal capacity of the grain, the pulsed beams is short and the frequency is very … Continue reading

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The Comparative Between Fiber Laser Cutting Machine and CO2 Cutting Machine

Cutting is one of the most widely applied laser processing techniques. Fiber laser and CO2 laser are the most commonly used laser cutting equipment. It is necessary for users to have a knowledge of the advantages and disadvantages of both … Continue reading

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Ultrafast laser pulses induce atoms in gold nanodisks to vibrate

In a study that could open doors for new applications of photonics from molecular sensing to wireless communications, Rice University scientists have discovered a new method to tune the light-induced vibrations of nanoparticles through slight alterations to the surface to … Continue reading

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Polarization Dependent Isolator vs Polarization Independent Isolator

Connectors and other types of optical devices on the output of the transmitter may cause reflection, absorption, or scattering of the optical signal. These effects on the light beam may cause light energy to be reflected back at the source … Continue reading

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Large Mode Area Fibers

Optical fibers with relatively large mode areas and a single transverse mode or only a few modes. For some applications, it is desirable to use optical fibers with a large mode area (LMA fibers) – often with single-mode guidance. Due … Continue reading

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Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers(7)

Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers(7) 5. Simulations and results for a multi pump port configuration So far, the modeling results consider a TF with only a single pump port. However, for monolithic high … Continue reading

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