Angle-modulated polarized surface plasma wave sensor |
Title： |
| Angle-modulated polarized surface plasma wave sensor |
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Application Number： |
01136670 |
Application Date： |
2001/10/26 |
Announcement Date： |
2002/04/03 |
Pub. Date： |
2004/07/21 |
Publication Number： |
1342885 |
Announcement Number： |
1158519 |
Grant Date： |
2004-7-21 |
Granted Pub. Date： |
2004-7-21 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01D 5/26 |
Applicant(s)： |
Qinghua Univ |
Inventor(s)： |
Guo Jihua, Sun Jialin, Chen Tao |
Key Words： |
Angle-modulated, polarized, surface plasma wave, sensor |
Abstract： |
An angle-modulated polarized surface plasma sensor is disclosed. The laser beam from laser device is converted to linear polarized light by polarizer, and then going to the reflaction surface of sensing part. The reflected light is converted to left-hand turning and right-hand turning circular polarized beams by 1/4 wave plate, here the lights are then covnerted to linear polarized beam by analyzer. After the linear polarized beams are converted to electric signals, with the beams phase-locked and amplified, it is outputted to computer to display result. The signal generator sends signal to angle modulator for modulating the incident angle of the incident light at trigger. Its advantages are low white noise and high resolution. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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