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Analog detection for cavity lifetime spectroscopy

United States Patent

March 11, 2003
View the Complete Patent at the US Patent & Trademark Office
An analog detection system for determining a ring-down rate or decay rate 1/.tau. of an exponentially decaying ring-down beam issuing from a lifetime or ring-down cavity during a ring-down phase. Alternatively, the analog detection system determines a build-up rate of an exponentially growing beam issuing from the cavity during a ring-up phase. The analog system can be employed in continuous wave cavity ring-down spectroscopy (CW CRDS) and pulsed CRDS (P CRDS) arrangements utilizing any type of ring-down cavity including ring-cavities and linear cavities.
Zare; Richard N. (Stanford, CA), Harb; Charles C. (Palo Alto, CA), Paldus; Barbara A. (Mountain View, CA), Spence; Thomas G. (Palo Alto, CA)
The Board of Trustees of the Leland Stanford Junior University (Stanford, CA)
09/ 755,253
January 4, 2001
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was developed with government support provided by the Department of Energy under contract No. DE-FG03-92ER14303 and ARPA-ONR contract No. N00014-92-J-1903. The government has certain rights in this invention.