5 May 2015 Tunable diode laser absorption spectroscopy on 2.05 μm for the CO2 concentration measurement
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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.
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Alina Pranovich, Alina Pranovich, Martin Divoky, Martin Divoky, Ivan Prochazka, Ivan Prochazka, Tomas Mocek, Tomas Mocek, } "Tunable diode laser absorption spectroscopy on 2.05 μm for the CO2 concentration measurement", Proc. SPIE 9506, Optical Sensors 2015, 95061S (5 May 2015); doi: 10.1117/12.2178748; https://doi.org/10.1117/12.2178748
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