The researchers were trying to answer the basic question, why do lasers not exist in nature?
研究者想回答为什么激光器不自然存在这个基本问题。
The basic structure and the fundamental principle of semiconductor saturable absorption mirrors (SESAM) that are used for passive mode-locking solid-state lasers are introduced.
介绍了半导体可饱和吸收镜(SESAM)的基本结构及使用半导体可饱和吸收镜被动锁模固态激光器的基本原理。
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