TY - JOUR
T1 - Broadband cavity ringdown spectroscopy for sensitive and rapid molecular defection
AU - Thorpe, Michael J.
AU - Moll, Kevin D.
AU - Jones, Jason R.
AU - Safdi, Benjamin
AU - Ye, Jun
PY - 2006/3/17
Y1 - 2006/3/17
N2 - We demonstrate highly efficient cavity ringdown spectroscopy in which a broad-bandwidth optical frequency comb is coherently coupled to a high-finesse optical cavity that acts as the sample chamber. 125,000 optical comb components, each coupled into a specific longitudinal cavity mode, undergo ringdown decays when the cavity input is shut off. Sensitive intracavity absorption information is simultaneously available across 100 nanometers in the visible and near-infrared spectral regions. Real-time, quantitative measurements were made of the trace presence, the transition strengths and linewidths, and the population redistributions due to collisions and the temperature changes for molecules such as C2H2, O2, H2O, and NH3.
AB - We demonstrate highly efficient cavity ringdown spectroscopy in which a broad-bandwidth optical frequency comb is coherently coupled to a high-finesse optical cavity that acts as the sample chamber. 125,000 optical comb components, each coupled into a specific longitudinal cavity mode, undergo ringdown decays when the cavity input is shut off. Sensitive intracavity absorption information is simultaneously available across 100 nanometers in the visible and near-infrared spectral regions. Real-time, quantitative measurements were made of the trace presence, the transition strengths and linewidths, and the population redistributions due to collisions and the temperature changes for molecules such as C2H2, O2, H2O, and NH3.
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U2 - 10.1126/science.1123921
DO - 10.1126/science.1123921
M3 - Article
C2 - 16543457
AN - SCOPUS:33645052979
SN - 0036-8075
VL - 311
SP - 1595
EP - 1599
JO - Science
JF - Science
IS - 5767
ER -