Abstract
A photoacoustic trace-gas sensor for the measurement of nitric oxide with a detection limit of 500 parts in has been demonstrated. The radiation source was a thermoelectrically cooled distributed-feedback quantum-cascade laser operating in pulsed mode near with an average laser power of . A resonant photoacoustic cell was excited in its first longitudinal mode by the modulated laser light. Preliminary measurements have been performed to test the performance of our photoacoustic sensor; possible improvements to reach lower detection limits are discussed.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Lei Dong, Vincenzo Spagnolo, Rafał Lewicki, and Frank K. Tittel
Opt. Express 19(24) 24037-24045 (2011)
Stuart Gray, Anping Liu, Feng Xie, and Chung-en Zah
Opt. Express 18(22) 23353-23357 (2010)
Mohammed A. Gondal, Ahmed Asaad I. Khalil, and Noura Al-Suliman
Appl. Opt. 51(23) 5724-5734 (2012)