Share Email Print
cover

Proceedings Paper

QEPAS nitric oxide sensor based on a mid-infrared fiber-coupled quantum cascade laser
Author(s): Wei Ren; Chao Shi; Zhen Wang; Chenyu Yao
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report a quartz-enhanced photoacoustic sensor (QEPAS) for nitric oxide (NO) detection using a mid-infrared fibercoupled quantum cascade laser (QCL) near 5.2 μm. The QCL radiation was coupled into an InF3 fiber (100 μm core diameter) for light delivery to the quartz tuning fork, a tiny piezoelectric element converting the acoustic wave induced mechanical vibration to the gas-absorption associated electrical signal. This mid-infrared fiber can achieve nearly single-mode light delivery for the target wavelength. The off-beam configuration was adopted for the fiber-coupled detection considering its simpler installation, optical alignment and comparative sensitivity to the traditional on-beam setup.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103231Z (23 April 2017); doi: 10.1117/12.2262961
Show Author Affiliations
Wei Ren, The Chinese Univ. of Hong Kong (Hong Kong, China)
Chao Shi, The Chinese Univ. of Hong Kong (Hong Kong, China)
Zhen Wang, The Chinese Univ. of Hong Kong (Hong Kong, China)
Chenyu Yao, The Chinese Univ. of Hong Kong (Hong Kong, China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

© SPIE. Terms of Use
Back to Top