Abstract
Dispersion-based spectroscopic techniques present many desirable features when compared with classical absorption spectroscopy implementations, such as the normalization-free operation and the extended dynamic range. In this Letter, we present a new sensor design based on direct optical processing for heterodyne conversion in tunable laser chirped dispersion spectroscopy that allows sensor implementations using low-speed photodetectors and low-cost FM demodulators. The performance of the new setup has been validated using as a target the ro-vibrational transition of methane at approximately 1650.96 nm.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Pedro Martín-Mateos and Pablo Acedo
Opt. Express 22(12) 15143-15153 (2014)
Genevieve Plant, Yifeng Chen, and Gerard Wysocki
Opt. Lett. 42(14) 2770-2773 (2017)
Michal Nikodem and Gerard Wysocki
Opt. Lett. 38(19) 3834-3837 (2013)