Ring resonant cavities for spectroscopy

Details Ring resonant cavities for spectroscopy Ring resonant cavities for spectroscopy

1997-06-20

1999-06-15

Rosenberger, Richard A.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356440, G01N 2161

Patent

active

059127406

ABSTRACT:
Ring-shaped resonant cavities for spectroscopy allow a reduction in optical feedback to the light source, and provide information on the interaction of both s- and p-polarized light with samples. A laser light source is locked to a single cavity mode. An intracavity acousto-optic modulator may be used to couple light into the cavity. The cavity geometry is particularly useful for Cavity Ring-Down Spectroscopy (CRDS).

REFERENCES:
patent: 5173749 (1992-12-01), Tell et al.
patent: 5414508 (1995-05-01), Takahashi et al.
patent: 5432610 (1995-07-01), King et al.
patent: 5528040 (1996-06-01), Lehmann
Romanini et al. "CW cavity ring-down spectroscopy" Chemical Physics Letters 264(1977) 316-322, Jan. 10, 1997.
Drever, R. et al. Laser Phase and Frequency Stabilization Using an Optical Resonator. Applied Physics B 31, 97-105. 1983.
O'Keefe, Anthony and Deacon, David. Cavity ring-down optical spectometer for absorbtion measurements using pulsed laser sources. Rev. Sci. Instrum. 59 (12), Dec. 1988.
Zalicki, Piotr and Zare, Richard. Cavity ring-down spectroscopy for quantitative absorption measurement. J. Chem. Phys. 102 (7), Feb. 15, 1995 .

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