Frequency-switched heterodyne cavity ringdown spectroscopy

被引:24
作者
Levenson, MD
Paldus, BA
Spence, TG
Harb, CC
Zare, RN
Lawrence, MJ
Byer, RL
机构
[1] Informed Diagonst Corp, Sunnyvale, CA 94086 USA
[2] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[3] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
关键词
Intercavity fields;
D O I
10.1364/OL.25.000920
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
When the frequency of light coupled into a cavity is suddenly shifted, the radiation emanating from the input port of the previously excited cavity can beat with the reflection of the frequency-shifted input on the surface of a photodetector. When the beat frequency is stable, the time decay of the resulting optical heterodyne signal can be used to measure intracavity absorption spectra with near quantum-limited sensitivity. (C) 2000 Optical Society of America OCIS codes: 300.6360, 120.6200, 040.2840, 300.6310.
引用
收藏
页码:920 / 922
页数:3
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