公开(公告)号：US5373515A

公开(公告)日：1994-12-13

申请号：US721929

申请日：1991-06-21

申请人： Osamu Wakabayashi ,  Yasuo Itakura ,  Masahiko Kowaka ,  Yoshino Amada

发明人： Osamu Wakabayashi ,  Yasuo Itakura ,  Masahiko Kowaka ,  Yoshino Amada

IPC分类号： G01J3/46 ,  G02B27/42 ,  G05D25/02 ,  H01S3/137 ,  H01S3/225 ,  H01S3/13

CPC分类号： H01S3/137 ,  H01S3/08004 ,  H01S3/225

摘要： A laser wavelength controlling apparatus adapted for controlling the wavelength of a narrow-band oscillation laser beam at a high accuracy for long period of time even if environmental conditions such as the atmospheric temperature and pressure changes to some degree. This wavelength controlling apparatus includes a wavelength selective element (2) for narrowing the band width of the oscillating laser beam; a wavelength selection controller 9 and a wavelength selective element driver for changing the wavelength to be selected by the wavelength selective element (2); a reference light source (7) for generating a reference light for measuring the wavelength of the oscillating laser beam; a wavelength detector (8) for leading said oscillating laser beam and said reference light into a spectroscope and detecting the absolute wavelength of said oscillating laser beam on the basis of the detected value of the reference light; and a wavelength detecting driver (8a) for controlling the wavelength to be selected by said wavelength selective element in cooperation with said wavelength controller (9) so as to correspond the absolute wavelength detected by the wavelength detector with the preset wavelength.

摘要翻译： 一种激光波长控制装置，即使在大气温度和压力等环境条件有一定程度的变化的情况下，也可以长时间高精度地控制窄带振荡激光的波长。 该波长控制装置包括用于使振荡激光束的带宽变窄的波长选择元件（2） 波长选择控制器9和用于改变由波长选择元件（2）选择的波长的波长选择元件驱动器; 用于产生用于测量所述振荡激光束的波长的参考光的参考光源（7）; 用于将所述振荡激光束和所述参考光引导到分光镜中的波长检测器（8），并且基于所述参考光的检测值来检测所述振荡激光束的绝对波长; 以及波长检测驱动器（8a），用于与所述波长控制器（9）协作控制由所述波长选择元件选择的波长，以便将波长检测器检测到的绝对波长与预设波长相对应。