Up to ten laser diode arrays integrated in a pumping line

Customer-oriented approach

The modular pumping lines can take two to ten laser diode arrays and are ready for use.

Source: OSRAM

RayTools has combined laser diode arrays of the SIRILAS type from OSRAM Opto Semiconductors into modular pumping lines. Each laser diode array consists of a bar with 16 individual emitters. It achieves an output of 30 W. Pumping lines with up to ten laser diode arrays therefore have outputs of up to 300 W. OSRAM Opto Semiconductors will be premiering these ready-for-use pumping lines at Photonics West.

SIRILAS belongs to a group of laser diode arrays with special heat sinks. Integrated cooling fins on which the laser bar is centered provide effective water cooling. The simple design of the cooling channels counters the possibility of corrosion. An enclosed package protects against dust and contact. An integrated lens produces an almost parallel beam, with vertical divergence of typical one degree.
By integrating these laser diode arrays in pumping lines, RayTools is saving potential customers a major development stage. The result is a ready-to-use module with optimized cooling that can be easily incorporated in the standardized mechanical, thermal and electrical interfaces of a pumping application. By combining multiple pumping lines it is possible to supply high-power solid-state lasers with energy. These are used as alternatives to CO² lasers for material processing (for example for welding plastic and metal). The output of a laser system can be further increased by connecting solid state lasers in series.
Solid-state lasers that are excited by diode laser pumping lines are much smaller than CO² lasers and operate more efficiently. SIRILAS semiconductor lasers with an efficiency of more than 50% are ideal pumping sources because their output can be precisely tuned to the absorption lines of the solid-state laser materials. This reduces the thermal load on the solid-state laser medium. Efficiency and beam quality are improved. What's more, maintenance is easier because the laser diode arrays can be replaced individually if necessary.

See related Product information:

Laser Diode Array SIRILAS

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