Title :
Chirped laser dispersion spectroscopy with baseline-free 2nd harmonic detection
Author :
Nikodem, Michal ; Smith, Clinton ; Weidmann, Damien ; Wysocki, Gerard
Author_Institution :
Electr. Eng. Dept., Princeton Univ., Princeton, NJ, USA
Abstract :
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.
Keywords :
optical dispersion; optical signal detection; quantum cascade lasers; remote sensing by laser beam; spectroscopy; baseline-free 2nd harmonic detection; chirped laser dispersion spectroscopy; molecular spectroscopy; phase sensitive signal detection; quantum cascade laser; remote sensing; trace gases; wavelength 5.2 mum; Dispersion; Harmonic analysis; Measurement by laser beam; Optical refraction; Optical sensors; Optical variables control; Quantum cascade lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
