以下英文内容来自维基百科“Amplified spontaneous emission （ASE）”条目

   Amplified spontaneous emission (ASE) or superluminescence is light, produced by spontaneous emission, that has been optically amplified by the process of stimulated emission in a gain medium. It is inherent in the field of random lasers

    被放大的自发辐射（ASE）或超发光是由自发辐射所产生的光，该光在增益介质中被受激辐射过程所光学放大。在激光场中，它是固有的。

   ASE is produced when a laser gain medium is pumped to produce a population inversion. Feedback of the ASE by the laser's optical cavity may produce laser operation if the lasing threshold is reached. Excess ASE is an unwanted effect in lasers, since it limits the maximum gain that can be achieved in the gain medium. ASE creates serious problems in any laser with high gain and/or large size. In this case, a mechanism to absorb or extract the incoherent ASE must be provided, otherwise the excitation of the gain medium will be depleted by the incoherent ASE rather than by the desired coherent laser radiation. ASE is especially problematic in lasers with short and wide optical cavities, such as disk lasers (active mirrors).

   当激光增益介质被泵浦产生粒子数反转时，ASE就会产生。激光器光学腔ASE的反馈会产生激光，如果激光阈值被达到的话。过量的ASE是激光器中一种不想要的效应，因为它限制了增益介质能够获得的最大增益。在高增益和/或大尺寸的任何激光器中，ASE都会产生严重的问题。在这种情况下，必须提供一种吸收或提取固有ASE的机制，否则增益介质的激发将会被非相关ASE而不是想要的相关激光辐射所耗尽。在诸如disk lasers的短而宽光学腔激光器中，ASE是特别有问题的。