An equation for lifetime shortening is derived, which is used to determine readily the lifetime characteristics of He-Ne lasers.
导出了加速寿命公式，利用该公式，可以快速地判定氦-氖激光管的寿命特征。
This paper describes a phototypesetter with four scanning laser beams. There are four He-Ne Lasers and four acoustooptic modulators in the phototypesetter.
本文介绍了四束激光扫描照排机，照排机内安装有四支氦氖激光器及四个声光调制器。
This paper describes a phototypesetter with four scanning laser beams. There are four He-Ne Lasers and four acoustooptic modulators in the phototypesetter.
本文介绍了四束激光扫描照排机，照排机内安装有四支氦氖激光器及四个声光调制器。
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