Pumping up high-performance fibre lasers

PublishTime：2022-11-07

●Breakthroughs in loser diode and fibre-couping technologies ore enabling low-cost, high-reliability sources with remarkable sheet metal cutting capabilities
●BY ERIK ZUCKER FROM JDSU
■CHANGE IS AFOOT in the sector of the laser market covering high-power sources for metal processing. This 'macro' material market has traditionally been dominated by CO₂ lasers, but lasers based on the optical pumping of a doped fibre are now winning significant market share, thanks to their combination of low cost of ownership and excellent cut quality on a wide variety of metals. According to Industrial Laser Solutions, which has been working with analyst Strategies Unlimited, the macro fibre laser market is growing at 24 percent per year, and should hit $536 million in 2014. In comparison, sales of CO₂ lasers in this sector are falling by 7 percent per year, and will be worth $647 million this year.
■If the current trend in the macro fibre laser market continues it will not be long before the dominant source is a semiconductor-pumped fibre laser – a laser in which GaAs-based laser diodes are used to pump ten metres or more of fibre, which has a Bragg grating at either end to form a resonant, high-power, laser cavity. In this form of laser system, gain is generated in the fibre by active ions, such as ytterbium or erbium, that are doped into the fibre core. The light that is coupled into this fibre from the GaAs diodes pump the active ions, generating light at a longer wavelength, which is guided within the fibre waveguide. The longer-wavelength light resonates between the two gratings, while being amplified with every pass through the cavity. Making one of the gratings partially transparent allows some light to pass through and impinge upon any material that needs to be processed.

Brand of Product：	Lumentum
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Product Category：	INDUSTRY LASERS 、 fibre lasers More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	2014/9/13
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Data Size：	7 MB

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