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19 November 2012 The characteristics of solid etalon Doppler discriminator and transmitter in designing Doppler lidar
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Abstract
In this paper, we propose a new type of Doppler discrimination system using an unseeded pulsed Q-switched laser and solid etalon. To substantiate our system, we calculate the transmitting spectral power distribution and discriminator characteristics. In our calculation, we use a 25 mm thick solid etalon with a finesse of 30, as well as a normal pulsed laser with a bandwidth of 1 cm-1. The results reveal that the change in the receiving scattered signal through the discriminator with a given LOS(Line of Sight) wind velocity is more sensitive than a normal iodine metal vapor-based Doppler lidar receiving system. We experimentally verify our suggestion using our Doppler discriminator and transmitter, and confirm that this combination is more sensitive than a metal vapor filter. Moreover, we suggest a more efficient transmitter and a more sensitive double-edge receiving system based on our calculations and experimental results.
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Dukhyeon Kim and Hae-Du Cheong "The characteristics of solid etalon Doppler discriminator and transmitter in designing Doppler lidar", Proc. SPIE 8526, Lidar Remote Sensing for Environmental Monitoring XIII, 85260Y (19 November 2012); https://doi.org/10.1117/12.976838
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