Lifetime evaluation on mid-infrared solid state laser

In this paper, 3-5μm solid state laser aging equipment was set up, according to the actual aging test result, we confirmed that the 3-5μm laser module (optical parametric oscillator) was the weakness part for the lifetime of the solid-state laser. Three groups of aging tests which the pumping power for the optical parametric oscillator was the accelerated stress were conducted on 3-5μm solid state lasers, according to the aging data analysis result, we can not only obtain the exponential degradation model of the optical parametric oscillator, but also we can obtain the accelerated model, and using these models we can quantitive evaluate the lifetime of the mid-infrared solid-state laser.