Adaptive surface plasma wave gas refractivity sensor |
Title： |
| Adaptive surface plasma wave gas refractivity sensor |
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Application Number： |
01134380 |
Application Date： |
2001/11/02 |
Announcement Date： |
2002/04/17 |
Pub. Date： |
2004/03/10 |
Publication Number： |
1344926 |
Announcement Number： |
1141571 |
Grant Date： |
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Granted Pub. Date： |
2004-3-10 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G01N 21/41, G01N 21/55, G02B 5/04 |
Applicant(s)： |
Qinghua Univ. |
Inventor(s)： |
Guo Jihua, Yin Chunyong, Wu Jian |
Key Words： |
Adaptive, surface plasma wave, gas refractivity, sensor |
Abstract： |
The self-adaptive surface plasma wave gas refractivity sensor includes one triangular prism and one roof prism attached to the outgoing surface of the triangular prism. It is featured by that the incident light to one surface of the triangular prism is reflected by one transducing surface, one roof surface and the reflaction of light goes on till to meet the original incident surface to pass through out. Compared with prior art of surface plasma wave sensor, the present invention has high reflectivity resolution superior to 1E-(-7) and less optical axis drift sensitivity. Theoretical calculation shows that optical axis drift of 1E(-5) arc will result in 1E(-7) refractivity change measured. Therefore, the present invention can raise the relief map stability of the system greatly. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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