摘要
长度单位'米'已重新加以定义,它是建立在光速为常数值的基础上,如何按新定义的要求,以基准的实际形式作复现是极为重要的。本文阐述我国所进行的有关研究及取得的成果包括对多波长稳频激光器的描述、碘稳频激光的国际比对,测量基准量块和线纹尺的干涉仪及以它们测量出的量值与国际比对结果。
As the length unit'metre' has been given a redefinition which is based on the light speed in vacuum with a constant value; it is of great importance and reproduce the new definition of metre in practical standard coincided the condition recommaded by CCDM.This paper describes the research work and achievement concerning of reproduction of length primary standard in NIM, such as the stabilised laser with several wavelengths, I_2-stabilised He-Ne laser international comparison interferometry standard gauge block and line sacle measurement and instrument, as well as their measuring results and intercomparison with other coutries.
出处
《现代计量测试》
1993年第2期3-9,共7页
Modern Measurement and Test
关键词
长度
激光器
波长
单位
米
计量
Length standard
stabilised laser
wavelength standard
interferometer
gauge blook
line scale
