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Laser device coupled to a cavity by optical feedback for detecting gas traces
Laser device coupled to a cavity by optical feedback for detecting gas traces
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机译:通过光反馈耦合到腔体的激光设备,用于检测气体痕迹
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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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