Assessment of factors regulating the thermal lens profile and lateral brightness in high power diode lasers

J. Rieprich; M. Winterfeldt; J. Tomm; R. Kernke; P. Crump

doi:10.1117/12.2252931

22 February 2017 Assessment of factors regulating the thermal lens profile and lateral brightness in high power diode lasers

J. Rieprich, M. Winterfeldt, J. Tomm, R. Kernke, P. Crump

Author Affiliations +

Proceedings Volume 10085, Components and Packaging for Laser Systems III; 1008502 (2017) https://doi.org/10.1117/12.2252931
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

The lateral beam parameter product, BPP_lat, and resulting lateral brightness of GaAs-based high-power broad-area diode lasers is strongly influenced by the thermal lens profile. We present latest progress in efforts using FEM simulation to interpret how variation in chip construction influences the thermal lens profile, itself determined experimentally using thermography (thermal camera). Important factors are shown to include the vertical (epitaxial) structure, the properties of the submount and the transition between chip and submount, whose behavior is shown to be consistent with the presence of a significant thermal barrier.

Citation Download Citation

J. Rieprich, M. Winterfeldt, J. Tomm, R. Kernke, and P. Crump "Assessment of factors regulating the thermal lens profile and lateral brightness in high power diode lasers", Proc. SPIE 10085, Components and Packaging for Laser Systems III, 1008502 (22 February 2017); https://doi.org/10.1117/12.2252931

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