Title :
Laser-spectroscopic detection of methylamines for human breath analysis
Author :
Marinov, D. ; Rey, J.M. ; Sigrist, M.W.
Author_Institution :
ETH Zurich, Zurich
Abstract :
Summary form only given. In this study we performed a comparison in the performance of two laser based spectroscopic techniques operating in different spectral regions for investigation of mono-(MMA, CH3NH2) and dimethyl (DMA, (CH3)2NH) amines. A near infrared (IR) system in the region of the first overtone of the N-H stretch vibration based on a cw cavity ringdown (CRD) detection technique and a mid IR system in the region of the fundamental C-H stretch based on a difference frequency generation (DFG) laser source and ratiometric multipass absorption technique.
Keywords :
laser applications in medicine; measurement by laser beam; optical frequency conversion; organic compounds; pneumodynamics; spectrochemical analysis; C-H stretch; N-H stretch vibration; cw cavity ringdown detection technique; difference frequency generation; dimethyl amines; human breath analysis; laser-spectroscopic detection; methylamines; mid IR system; near infrared system; ratiometric multipass absorption technique; Electromagnetic wave absorption; Gas lasers; Humans; Infrared detectors; Interference; Performance evaluation; Quantum cascade lasers; Ring lasers; Tunable circuits and devices; Water;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386411
