Abstract
An optical parametric oscillator (OPO), pumped by a fiber-amplified diode laser, is combined with off-axis integrated cavity output spectroscopy (OA-ICOS). The cw OPO (power , tunability , mode-hop-free tuning) has a tuning speed of , which is ideal for rapid and sensitive trace gas detection. Combined with OA-ICOS, a detection limit of 50 parts per trillion by volume () of ethane () in nitrogen was obtained in at , corresponding to a noise equivalent absorption sensitivity of . The system demonstrates real-time measurements of methane and water in exhaled human breath.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Denis D. Arslanov, Koen Swinkels, Simona M. Cristescu, and Frans J. M. Harren
Opt. Express 19(24) 24078-24089 (2011)
Yury A. Bakhirkin, Anatoliy A. Kosterev, Chad Roller, Robert F. Curl, and Frank K. Tittel
Appl. Opt. 43(11) 2257-2266 (2004)
Jingjing Wang, Xing Tian, Yang Dong, Gongdong Zhu, Jiajin Chen, Tu Tan, Kun Liu, Weidong Chen, and Xiaoming Gao
Opt. Express 27(21) 30517-30529 (2019)