半导体光电二极管

本文着重介绍了半导体雪崩光电二极管（APD）的研究现状和应用，以及一种新型的单光子探测器&真空雪崩光电二极管（VAPD）的结构，原理和特性。

A overview of the basic structure , operating principle and properties for a new single-photon photo-detector , called vacuum avalanche photodiode ( VAPD ), is presented too .

它利用基于光学三角法的激光位移传感器获得轴类零件的径向尺寸，利用半导体激光器与光电二极管组成的扫描式发讯传感器和光栅传感器的组合获得轴向尺寸。

It uses a macro laser sensor based on optical-electronic triangulation method to get diametric size , and uses grating linear transducer and scanning sensor composed of laser diode and photo-diode to get axial size of the work-piece to be measured .

太阳能电池板是半导体产物，它由一些半导体光电二极管组成。

Solar panels are semiconductor products which are made up of some semiconductor photo diodes .