100-W 105-um 0.15NA fiber coupled laser diode module

Scott R. Karlsen; R. Kirk Price; Mitch Reynolds; Aaron Brown; Ron Mehl; Steve Patterson; Robert J. Martinsen

doi:10.1117/12.809710

23 February 2009 100-W 105-μm 0.15NA fiber coupled laser diode module

Scott R. Karlsen, R. Kirk Price, Mitch Reynolds, Aaron Brown, Ron Mehl, Steve Patterson, Robert J. Martinsen

Proceedings Volume 7198, High-Power Diode Laser Technology and Applications VII; 71980T (2009) https://doi.org/10.1117/12.809710
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

We report on the development of a high brightness laser diode module capable of coupling over 100W of optical power into a 105 μm 0.15 NA fiber at 976 nm. This module, based on nLIGHT's Pearl product architecture, utilizes hard soldered single emitters packaged into a compact and passively-cooled package. In this system each diode is individually collimated in the fast and slow axes and free-space coupled into a single fiber. The high brightness module has an optical excitation under 0.13 NA, is virtually free of cladding modes, and has an electrical to optical efficiency greater than 40%. Additionally, this module is compatible with high power 7:1 fused fiber combiners, and initial experiments demonstrated 500W coupled into a 220 μm, 0.22 NA fiber. These modules address the need in the market for higher brightness diode lasers for pumping fiber lasers and direct material processing.

Citation Download Citation

Scott R. Karlsen, R. Kirk Price, Mitch Reynolds, Aaron Brown, Ron Mehl, Steve Patterson, and Robert J. Martinsen "100-W 105-μm 0.15NA fiber coupled laser diode module", Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980T (23 February 2009); https://doi.org/10.1117/12.809710

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