Title :
Long-wave infrared chemical sensing based on orientation-patterned GaAs
Author :
Bisson, Scott E. ; KuIp, T.J. ; Levi, O. ; Harris, J.S. ; Fejer, M.M.
Author_Institution :
Sandia Nat. Labs., Livermore, CA, USA
Abstract :
This study employs orientation-patterned GaAs as part of a broadly tunable, continuous-wave, difference frequency generation (DFG) source for ultra-trace gas detection applications. The DFG source forms the basis of a long-wave (8-12 /spl mu/m) infrared cavity ring-down spectrometer. The combined high sensitivity of cavity ring-down spectroscopy coupled with the broad tunability of the DFG source allows both identification and quantification of a broad range of species.
Keywords :
atmospheric optics; atmospheric techniques; chemical sensors; gallium arsenide; infrared sources; infrared spectroscopy; optical frequency conversion; optical materials; optical tuning; spectrochemical analysis; 8 to 12 mum; GaAs; broadly tunable source; cavity ring-down spectrometer; cavity ring-down spectroscopy; chemical sensing; continuous-wave source; difference frequency generation source; long-wave infrared ring-down spectrometer; long-wave infrared sensing; orientation-patterned GaAs; ultratrace gas detection;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
