Experimental study of the characteristics of high-power laser diode radiation in the above-threshold mode for degradation analysis

V. V. Bliznyuk; N. V. Berezovskaya; M. A. Brit; O. I. Koval; V. A. Parshin; A. G. Rzhanov

doi:10.3103/S1541308X17020030

Experimental study of the characteristics of high-power laser diode radiation in the above-threshold mode for degradation analysis

Authors: Bliznyuk V.V.¹, Berezovskaya N.V.¹, Brit M.A.¹, Koval O.I.¹, Parshin V.A.¹, Rzhanov A.G.²
Affiliations:
1. National Research University “Moscow Power Engineering Institute”
2. Lomonosov Moscow State University
Issue: Vol 25, No 2 (2017)
Pages: 95-100
Section: Semiconductor Lasers
URL: https://journal-vniispk.ru/1541-308X/article/view/217742
DOI: https://doi.org/10.3103/S1541308X17020030
ID: 217742

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Abstract

The angular dependence of the intensity and contrast of the radiation of laser diodes (LDs) with a CW power of 1.25 W has been investigated in the above-threshold mode. An original method for detecting fundamental lasing is used to analyze the mode structure of the LD radiation at low pump currents. It is shown that this radiation contrast measurement makes it possible to detect the LD degradation in earlier stages than in power measurements.