skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dual-etalon cavity ring-down frequency-comb spectroscopy with broad band light source

Patent ·
OSTI ID:1129162
;

In an embodiment, a dual-etalon cavity-ring-down frequency-comb spectrometer system is described. A broad band light source is split into two beams. One beam travels through a first etalon and a sample under test, while the other beam travels through a second etalon, and the two beams are recombined onto a single detector. If the free spectral ranges ("FSR") of the two etalons are not identical, the interference pattern at the detector will consist of a series of beat frequencies. By monitoring these beat frequencies, optical frequencies where light is absorbed may be determined.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
8,693,004
Application Number:
13/050,430
OSTI ID:
1129162
Resource Relation:
Patent File Date: 2011 Mar 17
Country of Publication:
United States
Language:
English

References (18)

Optical sensing arrangements patent July 1990
Electro-optical measurement of hysteresis in interferometric modulators patent April 2008
Method and apparatus for conducting heterodyne frequency-comb spectroscopy patent January 2009
Cavity-Enhanced Direct Frequency Comb Spectroscopy: Technology and Applications journal June 2010
Cavity-enhanced dual-comb spectroscopy journal November 2009
Optical frequency synthesis based on mode-locked lasers journal October 2001
Polarization dependent cavity ring down spectroscopy journal September 1997
Cavity enhanced absorption and cavity enhanced magnetic rotation spectroscopy journal November 1998
Frequency Comb Vernier Spectroscopy for Broadband, High-Resolution, High-Sensitivity Absorption and Dispersion Spectra journal December 2007
Cavity enhanced absorption spectroscopy of multiple trace gas species using a supercontinuum radiation source journal January 2008
Two schemes for trace detection using cavity ringdown spectroscopy journal February 2004
An historical overview of cavity-enhanced methods journal October 2005
A new cavity based absorption instrument for detection of water isotopologues in the upper troposphere and lower stratosphere journal April 2009
Spectrometry with frequency combs journal January 2002
Cavity Ring-Down Absorption Spectrography based on filament-generated supercontinuum light journal January 2009
Broadband Cavity Ringdown Spectroscopy for Sensitive and Rapid Molecular Detection journal March 2006
Dual-etalon, cavity-ring-down, frequency comb spectroscopy. report October 2010
Sensitivity of coherent dual-comb spectroscopy journal January 2010

Similar Records

Dual-etalon, cavity-ring-down, frequency comb spectroscopy.
Technical Report · Fri Oct 01 00:00:00 EDT 2010 · OSTI ID:1129162
Facile Background Discrimination in Femtosecond Stimulated Raman Spectroscopy Using a Dual-Frequency Raman Pump Technique
Journal Article · Thu Sep 05 00:00:00 EDT 2019 · Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory · OSTI ID:1129162
+2 more
On-chip dual-comb based on quantum cascade laser frequency combs
Journal Article · Mon Dec 21 00:00:00 EST 2015 · Applied Physics Letters · OSTI ID:1129162
+2 more

Related Subjects

47 OTHER INSTRUMENTATION