Frequency-switched heterodyne cavity ringdown spectroscopy
Optics Letters, Vol. 25, Issue 12, pp. 920-922 (2000)
http://dx.doi.org/10.1364/OL.25.000920
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Abstract
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.
© 2000 Optical Society of America
OCIS Codes
(040.2840) Detectors : Heterodyne
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(300.6360) Spectroscopy : Spectroscopy, laser
Citation
M. D. Levenson, B. A. Paldus, T. G. Spence, C. C. Harb, R. N. Zare, M. J. Lawrence, and R. L. Byer, "Frequency-switched heterodyne cavity ringdown spectroscopy," Opt. Lett. 25, 920-922 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-12-920
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