Polarization Performance Analysis of Aerosol Polarimeter

Abstract

Abstract:

To understand the effect of polarization effect of the imperfect lens components and angle error of linear polarizers on polarimetric precision of the aerosol polarimeter, firstly, the polarization degree of lens component is deducted by combining the Jones matrix of lens component with the coherent matrix of incident beam. Secondly, the polarimetric error of the instrument is estimated by using Mueller matrix, considering all effects of the polarization states of incident beam, polarization effect of lens component and the azimuth errors of polarizers. Finally, the polarization degree of lens components and the polarimetric error of the instrument are specifically computed, respectively. At the channel of 0.67 μm, the maximum of polarization degree of the lens component and absolute polarimetric error of the instrument are 0.3143 and 0.2838, respectively. At the channel 1.64 μm, the maximum of polarization degree of the lens component and absolute polarimetric error of the instrument are 0.3249 and 0.2937respectively. It is indicated that the major error of the polarimeter arises from polarization effect of the imperfect lens components and a great error exists if the instrument is not calibrated.

Key words: polarization performance analysis, polarization degree error, Mueller matrix, polarization degree of lens, angle error

CLC Number:

DAI Hu, YAN Chang-Xiang, ZHANG Xin-Jie. Polarization Performance Analysis of Aerosol Polarimeter[J]. Journal of Atmospheric and Environmental Optics, 2014, 9(4): 280-288.

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