Method and apparatus for measuring out-of-plane birefringence of transparent samples

Method and apparatus for measuring out-of-plane birefringence of transparent samples

  • CN 1,739,007 B
  • Filed: 12/19/2003
  • Issued: 06/19/2013
  • Est. Priority Date: 12/20/2002
  • Status: Active Grant
First Claim
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1. method of be used for measuring the out-of-plane birefringence of transparent sample comprises the following steps:

  • Form the angled two light beams of separating of polarized light;

    Phase place to the every light beams in described light beam is modulated, and then described angled two light beams of separating is passed a position of sample, a branch of with vertical angle incident in described two light beams, and another light beams is with pitch angle incident;

    After described position in described light beam passes sample, the phase place of the every light beams in described light beam is modulated;

    Detect the intensity of the light beam passed this position, with provide described light beam that representative passed described position the time intensity adjustable output signal;

    AndCome the out-of-plane birefringence of calculation sample with described output signal.

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