Aging tests of high-power diode lasers as a basis for an international lifetime standard

Friedhelm Dorsch; Franz X. Daiminger

doi:10.1117/12.259922

20 November 1996 Aging tests of high-power diode lasers as a basis for an international lifetime standard

Friedhelm Dorsch, Franz X. Daiminger

Proceedings Volume 2870, Third International Workshop on Laser Beam and Optics Characterization; (1996) https://doi.org/10.1117/12.259922
Event: Third International Workshop on Laser Beam and Optics Characterization, 1996, Quebec City, Canada

Abstract

Higher power laser diodes have been aged under various operating conditions to gain information on the long-term output power behavior. In particular, the degradation of cw diode lasers that are operated at constant output power or at a constant driving current are compared to each other. It turns out that the lifetime results and their comparability strongly depend on the 'end-of-life' criterion. Especially for constant power operation extrapolation of the lifetime for longer intervals might give inconsistent results if the degradation of threshold current and slope efficiency are not known. Aging tests at increased temperature have been performed to investigate whether accelerated lifetime tests give reliable results to estimate lifetime and degradation rate at nominal operating conditions.

Citation Download Citation

Friedhelm Dorsch and Franz X. Daiminger "Aging tests of high-power diode lasers as a basis for an international lifetime standard", Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); https://doi.org/10.1117/12.259922

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