Acta Optica Sinica, Volume. 35, Issue 4, 412003(2015)
Test and Uncertainty Analysis of Reference Source with Variable Polarization Degree and Large Dynamic Range
A novel type of high precision reference source with variable polarization degree at large dynamic range(VPOLS-II) is introduced.The degree of linear polarization (DOLP) adjustment range of VPOLS-II varies from 0 to 0.72 within 0.46 mm to 2 mm.VPOLS-II produces linear polarization rays by four parallel glass plates.Through incorporating an integrating sphere and a beam expander system to guarantee the uniformity and parallelism of the outgoing beam,VPOLS-II generates rays with different DOLP through polarization state adjuster.DOLP values of VPOLS-II are tested.The calculated DOLP values of VPOLS-II and the measured ones by the spectropolarimetric analyzer (SPOLA) are compared and the factors influencing the uncertainty of DOLP are analyzed.The results show that the measured DOLP values of VPOLS-II are coincident with the theoretical ones within a 6 × 10-3 maximum difference when DOLP is less than 0.72.The combined uncertainty respectively is 8.8% ~0.936% and 0.936%~ 0.184% within DOLP of 0.01~0.09 and 0.09~0.72.This novel type of reference source meets the requirements polarimetric calibration in laboratory for polarized remote sensors and systematic performance test.
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Kang Qing, Li Jianjun, Chen Ligang, Wu Haoyu, Yuan Yinlin, Meng Fangang, Zhai Wenchao, Qi Tao, Zheng Xiaobing. Test and Uncertainty Analysis of Reference Source with Variable Polarization Degree and Large Dynamic Range[J]. Acta Optica Sinica, 2015, 35(4): 412003
Category: Instrumentation, Measurement and Metrology
Received: Sep. 22, 2014
Accepted: --
Published Online: Mar. 25, 2015
The Author Email: Qing Kang (kangqing2013@163.com)