Title :
Rapid scanning cavity ring-down spectroscopy at the quantum noise limit
Author :
Long, D.A. ; Fleisher, A.J. ; Wojtewicz, S. ; Plusquellic, D.F. ; Hodges, J.T.
Author_Institution :
Mater. Meas. Lab., Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
We present an ultrasensitive cavity-enhanced technique for probing weak molecular absorptions. Recently, we have implemented heterodyne detection, which allowed for quantum-noise-limited detection and noise-equivalent absorption coefficients as low as 6×10-14 cm-1·Hz-1/2.
Keywords :
absorption coefficients; heterodyne detection; quantum noise; heterodyne detection; noise-equivalent absorption coefficients; quantum noise limit; quantum-noise-limited detection; rapid scanning cavity ring-down spectroscopy; ultrasensitive cavity-enhanced technique; weak molecular absorptions; Absorption; Cavity resonators; Noise; Optical mixing; Optical sensors; Sensitivity; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
