Dual-frequency laser device with dual refractive films |
Title： |
| Dual-frequency laser device with dual refractive films |
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Application Number： |
02120798 |
Application Date： |
2002/05/31 |
Announcement Date： |
2002/11/13 |
Pub. Date： |
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Publication Number： |
1379514 |
Announcement Number： |
1182635 |
Grant Date： |
2004-12-29 |
Granted Pub. Date： |
2004-12-29 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01S 3/034, H01S 3/08 |
Applicant(s)： |
Tsinghua Univ |
Inventor(s)： |
Zhang Shulian, Zhu Jun, Liu Jinghua |
Key Words： |
Dual-frequency laser device, dual refractive films |
Abstract： |
This invention relates to a double-refraction film dual frequency laser comprising He-Ne laser discharging tube, laser window plate, cavity mirror, a pair of permanent magnets characterizing in coating overlap structure on the substrate with double-refraction film which is a film of anisotropy with double refraction property to have different reflective characteristics to display different refractive index for different light polarization states. When light enters the double-refraction film, the light becomes two polarized lights oscillating perpendicularly to each other with different transmitting speeds. The design of the invention is simple and available. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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