A phase sensitive signal detection scheme for molecular spectroscopy based on chirped laser dispersion spectroscopy (CLaDS) is presented. We demonstrate application to sensitive remote sensing of trace gases using a 5.2 μm quantum cascade laser.
© 2011 OSA
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(300.6390) Spectroscopy : Spectroscopy, molecular
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
M. Nikodem, C. J. Smith, D. Weidmann, and G. Wysocki, "Chirped Laser Dispersion Spectroscopy with baseline-free 2nd harmonic detection," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper CThT4.
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