Acta Optica Sinica, Volume. 35, Issue 11, 1101004(2015)
Simulation of Atmospheric Aerosol Particle Absorption Characters Based on Photo-Thermal Interferometry
The absorption of atmospheric aerosol particle is weak, but it affects earth′s radiation balance and atmospheric high energy laser transfer, so its precise measurement is paid more and more attention. By the analysis alteration of temperature distribution and refractive index which induced by pumping laser, the relationship of photo-thermal phase, effective absorption coefficient and excited time is deduced. Then phase generated carrier (PGC) algorithms for measuring phase change information is declared. It is also calculated that several photothermal effect of three typical aerosols with different absorbing capabilities which irradiated by pumping laser at two wavelengths. Then, the superiority of PGC algorithms is displayed, including its demodulation precision and noise elimination with calculation and error analysis. The experimental research of PGC algorithms is done.
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Li Shuwang, Shao Shiyong, Mei Haiping, Rao Ruizhong. Simulation of Atmospheric Aerosol Particle Absorption Characters Based on Photo-Thermal Interferometry[J]. Acta Optica Sinica, 2015, 35(11): 1101004
Category: Atmospheric Optics and Oceanic Optics
Received: May. 14, 2015
Accepted: --
Published Online: Nov. 3, 2015
The Author Email: Shuwang Li (lswang6@mail.ustc.edu.cn)