发明名称 |
Laser device coupled to a cavity by optical feedback for detecting gas traces |
摘要 |
A device of detection of gas in trace amounts by a semiconductor laser coupled to a resonant optical cavity containing a chemical species to be analyzed. The device comprises a resonant optical cavity containing a chemical species to be analyzed; a semiconductor laser, coupled by optical feedback to the optical cavity and capable of being frequency-scanned; a means for adjusting the laser-cavity coupling rate; a means for finely adjusting the optical feedback phase; and a means for measuring the light transmitted by the cavity.
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申请公布号 |
US7450240(B2) |
申请公布日期 |
2008.11.11 |
申请号 |
US20040492505 |
申请日期 |
2004.10.18 |
申请人 |
UNIVERSITE JOSEPH FOURIER |
发明人 |
MORVILLE JEROME;ROMANINI DANIELE;CHENEVIER MARC |
分类号 |
G01N21/00;G01B9/02;G01N21/39 |
主分类号 |
G01N21/00 |
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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