Title :
Ultra-sensitive detection of nitric oxide at 5.33 μm using an external cavity QCL based Faraday rotation spectroscopic sensor platform
Author :
Lewicki, Rafal ; Wysocki, Gerard ; Doty, Jim ; Curl, Robert F., Jr. ; Tittel, Frank K.
Author_Institution :
Rice Quantum Inst., Rice Univ., Houston, TX
Abstract :
Magnetic rotation spectroscopy of nitric oxide at most favorable Q(3/2) transition at 1875.8 cm-1 is reported. Detection limit (1sigma) at 5 ppb level was obtained for a ~44 cm long active optical path with 1s lock-in time constant.
Keywords :
Faraday effect; gas sensors; laser cavity resonators; measurement by laser beam; nitrogen compounds; optical sensors; quantum cascade lasers; Faraday rotation spectroscopic sensor; active optical path; external cavity QCL; lock-in time constant; magnetic rotation spectroscopy; nitric oxide detection; wavelength 5.33 mum; Biomedical optical imaging; Electromagnetic wave polarization; Laser tuning; Magnetic analysis; Magnetic field measurement; Magnetic semiconductors; Optical polarization; Optical sensors; Quantum cascade lasers; Spectroscopy; (140.5965) Semiconductor lasers, quantum cascade; (300.6360) Spectroscopy, laser;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
