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.
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Guoguang Lu, Guoguang Lu, Yun Huang, Yun Huang, Yunfei En, 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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