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II-VI Incorporated introduces 22W pump laser diodes for fibre lasers

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II‐VI Incorporated has introduced a new generation of pump laser diodes that achieve a high output power of 22W from a single chip.

Fiber lasers have represented an improved cost of ownership for industrial materials processing over the last several years. Advances in the power of individual laser diodes further represent a cost advantage in laser systems. II-VI's new laser diodes achieve 22W of output power or 22 per cent more than the existing product, enabling fibre laser designs with fewer emitters for applications such as cutting, welding, brazing and laser additive manufacturing.

II-VI’s new laser diodes achieve 22W of output power or 22 per cent more than the existing product, enabling fibre laser designs with fewer emitters for applications such as cutting, welding, brazing and laser additive manufacturing.

‘The pent up demand for our new laser chips is strong and we're beginning to ramp up production,’ said Karlheinz Gulden, general manager, II-VI Laser Enterprise. ‘Customers increasingly rely on II-VI's innovation in high-power semiconductor laser technology to produce the most competitive fibre lasers in terms of performance, reliability and cost.’

The 22W pump laser diodes are available at 915 and 976nm. The laser chips feature a 190µm wide output facet designed to achieve optimum coupling efficiency into the widely-used 200µm core fibres. The chips include II-VI's proprietary E2 front mirror passivation that prevents catastrophic damage to the laser, even at extremely high output powers. The new chip generation successfully completed qualification with 4,000 hours of accelerated aging.

II-VI's pump laser diodes are offered as bare dies, chips on ceramic sub-mount or in fibre-coupled multi-emitter modules. II-VI's broad portfolio of components for fibre lasers includes seed lasers, acousto-optic modulators, fibre Bragg gratings, kilowatt pump and signal combiners, as well as IBS-coated laser optics and micro-optics for high power isolators.

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