把异质结用在半导体激光器和高亮度发光二极管,大大地改善了器件的性能。然而,由于早期器件的寿命不稳定,可靠性便是主要关心的问题。现在,可靠的器件已经生产了,这是由于广泛地研究退化的原因和避免方法的结果。激光器的可靠性由两种基本因素来控制,即镜面损伤和内部形成非辐射中心。 The heterojunction used in semiconductor lasers and high brightness light-emitting diodes, greatly improving the performance of the device. However, reliability is a major concern because of the unstable lifetime of early devices. Reliable devices have now been produced due to the extensive study of the causes of degradation and the result of avoiding the method. The reliability of a laser is governed by two fundamental factors, namely, the damage of the mirror and the formation of a non-radiative center inside.