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Proceedings Paper

Tunable diode laser absorption spectroscopy at 2.05 um for the CO2 concentration measurement
Author(s): Alina Pranovich; Martin Divoky; Ivan Prochazka; Tomas Mocek
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Paper Abstract

An experimental setup for the CO2 concentration measurement operating at 2.05 μm in pulsed mode and its characterization are presented. The system consists of a light source, which is a tunable laser diode operating in pulse mode. The initial radiation from the diode laser is divided into two parts: the first part of the beam is directed to a retro reflector, and the second part is used for diode output power monitoring. The receiving system consists of a focusing optic and a photodiode. The absorption is determined by comparing the intensities of the detected light on wavelengths absorbed and not absorbed by CO2 molecules. The prospects of the system change to a differential absorption lidar (DIAL) with a parametric generator as a light source that increases precision and range of generated wavelengths up to 10 μm are outlined.

Paper Details

Date Published: 5 May 2015
PDF: 6 pages
Proc. SPIE 9506, Optical Sensors 2015, 95061S (5 May 2015); doi: 10.1117/12.2178748
Show Author Affiliations
Alina Pranovich, Institute of Physics of the ASCR v.v.i (Czech Republic)
Czech Technical Univ. in Prague (Czech Republic)
Martin Divoky, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Ivan Prochazka, Czech Technical Univ. in Prague (Czech Republic)
Tomas Mocek, Institute of Physics of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 9506:
Optical Sensors 2015
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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