发明名称 |
Radiation sensor with photo-thermal gain |
摘要 |
A thermal sensor for low level radiation with built-in photo-thermal gain utilizing a thin film of pyro-optical material to modulate the reflectivity and/or transmission of a photonic carrier beam. The photonic carrier beam is modulated by the temperature of the pyro-optical film and detected by typically a silicon detector. A slight temperature increase of the pyro-optical film due to absorption of low level radiation increases the coefficient of absorption of the photonic carrier beam which in turn causes a further increase in temperature of the pyro-optical film. The photonic carrier beam provides power to increase the temperature of the pyro-optical film beyond the heating caused by the absorption of low level radiation alone. This thermal amplification effect provides a radiation sensor with photo-thermal gain.
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申请公布号 |
US6888141(B2) |
申请公布日期 |
2005.05.03 |
申请号 |
US20020307586 |
申请日期 |
2002.12.02 |
申请人 |
MULTISPECTRAL IMAGING, INC. |
发明人 |
CARR WILLIAM N. |
分类号 |
G01J5/00;G01J5/58;G01K11/00;H01L25/00;H01L27/146;H01L31/0232;(IPC1-7):G01J5/00 |
主分类号 |
G01J5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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