12 November 2010 Lifetime estimation of high power lasers
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We have set up a computer automated controlled diode array reliability experiment which can take up 10 to 20 high power cm-bars. Subsequent 25°C and 50°C lifetime tests were completed. According to the method of least squares, the degradation model of cm-bars is obtained. Using the model and weibull++7 software, the extrapolated lifetime of cmbars at 25°C is 7950 hours (2.86×109 shots). We also obtain an acceleration factor 1.88 of resulting in a thermal activation energy of Ea=0.21eV using Arrhenius function. Finally, failure analysis was carried on the gradually degraded devices, the results show that it is the facet degradation which made high power cm-bars degrade during the long time lifetime test.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guoguang Lu, Yun Huang, Yunfei En, "Lifetime estimation of high power lasers", Proc. SPIE 7844, Semiconductor Lasers and Applications IV, 784413 (12 November 2010); doi: 10.1117/12.870751; https://doi.org/10.1117/12.870751


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