White-light interference of Michelson interferometer to measure group refractive index is improved, where grating displacement sensor is used to increase the displacement precision of scanning mirror.

 
  • 对测量群折射率的迈克耳孙白光干涉技术进行了改进;采用光栅线位移传感器提高反射扫描镜的位移精度.
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