Title :
Spectroscopic sensing at the quantum limit by active cavity impedance matching
Author :
Chow, Jong H. ; Rabeling, David S. ; Wade, Andrew ; Littler, Ian C M ; Gray, Malcolm B. ; McClelland, David E.
Author_Institution :
Centre for Gravitational Phys., Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
We demonstrate an active cavity impedance matching control technique using radio-frequency amplitude modulation homodyne interferometry, and show it can be used for absorption spectrometry at the quantum limit for both narrow and broadband molecular transitions.
Keywords :
amplitude modulation; homodyne detection; impedance matching; light interferometry; optical modulation; absorption spectrometry; active cavity impedance matching; homodyne interferometry; molecular transitions; quantum limit; radiofrequency amplitude modulation; spectroscopic sensing; Absorption; Amplitude modulation; Electrochemical impedance spectroscopy; Impedance matching; Impedance measurement; Loss measurement; Mirrors; Optical feedback; Optical interferometry; Optical noise; (230.5750) Resonators; (300.1030) Absorption Spectroscopy; (300.6380) Modulation spectroscopy;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
