Title :
Real time ammonia detection in exhaled human breath with a quantum cascade laser based sensor
Author :
Lewicki, Rafal ; Kosterev, Anatoliy A. ; Bakhirkin, Yury A. ; Thomazy, David M. ; Doty, Jim ; Dong, Lei ; Tittel, Frank K. ; Risby, Terence H. ; Solga, Steven ; Kane, Deborah ; Day, Timothy
Author_Institution :
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Abstract :
Quantum cascade laser based breath sensor platform for medical applications employing a quartz-enhanced photoacoustic spectroscopy technique is reported. The detection sensitivity for exhaled ammonia is at <10 ppbv level with 1 s time resolution.
Keywords :
ammonia; bioacoustics; chemical sensors; laser applications in medicine; measurement by laser beam; optical sensors; photoacoustic spectroscopy; pneumodynamics; quantum cascade lasers; quartz; NH3; SiO2; detection sensitivity; exhaled human breath; quantum cascade laser-based sensor; quartz-enhanced photoacoustic spectroscopy; real-time ammonia detection; time resolution; Biomedical optical imaging; Frequency; Humans; Laser tuning; Medical diagnostic imaging; Optical sensors; Quantum cascade lasers; Quantum computing; Quantum dot lasers; Spectroscopy; (140.5965) Semiconductor lasers, quantum cascade; (170.4580) Optical diagnostics for medicine; (300.6360) Spectroscopy, laser;
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
