Title :
Highly selective VOC breath analysis using a 3.3 μm broadly-tunable VECSEL
Author :
Jagerska, Jana ; Looser, Herbert ; Tuzson, Bela ; Felder, Ferdinand ; Tappy, Luc ; Emmenegger, Lukas
Author_Institution :
Empa, Dubendorf, Switzerland
Abstract :
Mid-infrared VECSEL tunable over 50 cm-1 is employed to measure trace gas concentrations of acetone in human breath. A detection limit of 25 ppb is demonstrated without any sample preparation.
Keywords :
gas sensors; laser applications in medicine; laser tuning; patient diagnosis; spectrochemical analysis; surface emitting lasers; acetone; broadly-tunable VECSEL; detection limit; highly selective VOC breath analysis; human breath; midinfrared VECSEL; trace gas concentrations; wavelength 3.3 mum; Absorption; Biomarkers; Biomedical optical imaging; Diseases; Optical sensors; Quantum cascade lasers; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
