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Ring resonant cavities for spectroscopy

United States Patent

5,912,740
June 15, 1999
View the Complete Patent at the US Patent & Trademark Office
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).
Zare; Richard N. (Stanford, CA), Martin; Juergen (Jena-Wogau, DE), Paldus; Barbara A. (Stanford, CA), Xie; Jinchun (Sunnyvale, CA)
The Board of Trustees of the Leland Stanford Junior University (Stanford, CA)
08/ 879,975
June 20, 1997
This invention was made with U.S. Government support under grant No. DE-FG03-92ER14304, awarded by the Department of Energy. The U.S. Government has certain rights in this invention.