2-micron coherent Doppler lidar instrument advancements for tropospheric wind measurement

Mulugeta Petros; U. N. Singh; J. Yu; M. J. Kavaya; G. Koch

doi:10.1117/12.2067676

20 October 2014 2-micron coherent Doppler lidar instrument advancements for tropospheric wind measurement

Mulugeta Petros, U. N. Singh, J. Yu, M. J. Kavaya, G. Koch

Proceedings Volume 9246, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing X; 92460A (2014) https://doi.org/10.1117/12.2067676
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

Knowledge derived from global tropospheric wind measurement is an important constituent of our overall understanding of climate behavior [1]. Accurate weather prediction saves lives and protects properties from destructions. High-energy 2-micron laser is the transmitter of choice for coherent Doppler wind detection. In addition to the eye-safety, the wavelength of the transmitter suitably matches the aerosol size in the lower troposphere. Although the technology of the 2-micron laser has been maturing steadily, lidar derived wind data is still a void in the global weather database. In the last decade, researchers at NASA Langley Research Center (LaRC) have been engaged in this endeavor, contributing to the scientific database of 2-micron lidar transmitters. As part of this effort, an in depth analysis of the physics involved in the workings of the Ho: Tm laser systems have been published. In the last few years, we have demonstrated lidar transmitter with over1Joule output energy. In addition, a large body of work has been done in characterizing new laser materials and unique crystal configurations to enhance the efficiency and output energy of the 2-micron laser systems. At present 2-micron lidar systems are measuring wind from both ground and airborne platforms. This paper will provide an overview of the advancements made in recent years and the technology maturity levels attained.

Citation Download Citation

Mulugeta Petros, U. N. Singh, J. Yu, M. J. Kavaya, and G. Koch "2-micron coherent Doppler lidar instrument advancements for tropospheric wind measurement", Proc. SPIE 9246, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing X, 92460A (20 October 2014); https://doi.org/10.1117/12.2067676

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