CO2-Tea pulse clipping using pulsed high voltage preionization for high spatial resolution I.R. Lidar systems
Division of Science & Engineering, Saint Louis University-Madrid Campus Avenida del Valle, 34, Madrid 28003, Spain.
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Published online: 13 April 2018
An extra-cavity CO2-TEA laser pulse clipper for high spatial resolution atmospheric monitoring is presented. The clipper uses pulsed high voltageto facilitate the breakdown of the gas within the clipper cell. Complete extinction of the nitrogen tail, that degrades the range resolution of LIDARS, is obtained at pressures from 375 up to 1500 Torr for nitrogen and argon gases whereas an attenuation coefficient of almost 102 is achieved for helium. Excellent energy stability and pulse width repeatability were achieved using high voltage pre-ionized gas technique.
© The Authors, published by EDP Sciences, 2018
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