A device which combines the ability to detect light and to provide gain in a single unit 一种在单个器件中具有光探测兼放大能力的器件。
Finally , some preliminary experiments on researching cmr effect and phase transition by optical method were carried out 最后,还对薄膜的cmr效应和相变的光探测做了初步研究。
Theory says that we cannot detect black holes by light that is emitted or reflected by the matter inside them 理论上说我们不能够通过光探测黑洞,光是靠黑洞内部物质的发射或反射。
In this research , the steady and temporal properties of two waves mixing ( twm ) were studied in a ce : knsbn crystal with a he - ne laser and a synchronous data recording system , and the process of twm was analyzed under a bump beam chopped condition 本文以he - ne激光为光源,采用实时光探测数据采集处理系统,系统的研究了ce : knsbn晶体的两波耦合稳态特性及两波耦合过程中信号光、泵浦光和光扇的时间演化,同时对泵浦光斩波两波耦合过程进行了分析。