Laser feed-back wave plate measuring apparatus |
Title： |
| Laser feed-back wave plate measuring apparatus |
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Application Number： |
200510012000 |
Application Date： |
2005/06/24 |
Announcement Date： |
2005/12/21 |
Pub. Date： |
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Publication Number： |
1710398 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01M 11/02, G01M 11/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Fei Ligang, Zhang Shulian |
Key Words： |
Laser feed-back, wave plate, measuring apparatus |
Abstract： |
A measuring device of laser feedback wave plate applies 632.8 nm He - Ne laser and external reflector to form laser feedback system for measuring phase delay of wave plate by utilizing principle of having linear relationship of two polarized states duty ratio to the phase delay of the wave plate to be tested in one modulating period of laser intensity. |
Claim： |
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Priority： |
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PCT： |
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