TY - GEN
T1 - Optical absorption spectrometry using laser amplitude modulation
AU - Chow, Jong H.
AU - Wade, Andrew R.
AU - Mow-Lowry, Conor
AU - Rabeling, David S.
AU - Littler, Ian C.M.
AU - McClelland, David E.
AU - Gray, Malcolm B.
PY - 2009
Y1 - 2009
N2 - We present a new technique for cavity enhanced optical absorption spectrometry, employing a radio-frequency amplitude modulated laser to interrogate an optical cavity. It is capable of sensing molecular absorption at the fundamental laser shot noise limit, and is able to perform quantum noise limited gas sensing at atmospheric pressure. We implement this technique, for the first time, in a free space cavity, and demonstrate that the demodulated error signal can be used to measure losses in a resonator.
AB - We present a new technique for cavity enhanced optical absorption spectrometry, employing a radio-frequency amplitude modulated laser to interrogate an optical cavity. It is capable of sensing molecular absorption at the fundamental laser shot noise limit, and is able to perform quantum noise limited gas sensing at atmospheric pressure. We implement this technique, for the first time, in a free space cavity, and demonstrate that the demodulated error signal can be used to measure losses in a resonator.
UR - http://www.scopus.com/inward/record.url?scp=77951142195&partnerID=8YFLogxK
U2 - 10.1109/ICSENS.2009.5398318
DO - 10.1109/ICSENS.2009.5398318
M3 - Conference contribution
SN - 9781424445486
T3 - Proceedings of IEEE Sensors
SP - 1979
EP - 1983
BT - IEEE Sensors 2009 Conference - SENSORS 2009
T2 - IEEE Sensors 2009 Conference - SENSORS 2009
Y2 - 25 October 2009 through 28 October 2009
ER -