Onboard Polarization Calibrators of Spaceborne Particulate Observing Scanning Polarimeter

Hongchun Yang; Jin Hong; Peng Zou; Maoxin Song; Benyong Yang; Zhenhai Liu

doi:10.3788/AOS201939.0912005

Acta Optica Sinica, Volume. 39, Issue 9, 0912005(2019)

Onboard Polarization Calibrators of Spaceborne Particulate Observing Scanning Polarimeter

Hongchun Yang^1,2,3、**, Jin Hong^1,3、*, Peng Zou^1,3, Maoxin Song^1,3, Benyong Yang^1,3, and Zhenhai Liu^1,3

Author Affiliations

¹ Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

³ Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China

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Figures & Tables(10)

Fig. 1. Optical layout of POSP

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Fig. 2. Layout of POSP onboard polarization calibrators

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Fig. 3. Schematic of POSP polarization analytic orientation

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Fig. 4. Schematic of linear polarized light orientation of LPC

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Fig. 5. Schematic of modified Lyot depolarizer

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Fig. 6. Spatial distribution of horizontal polarized light passing through modified Lyot depolarizer

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Fig. 7. Schematic of orientation relationship between Glan-Taylor polarizer and WP

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Table 1. Values of field angle calculated at each waveband when structure angle is 39.5°
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Table 1. Values of field angle calculated at each waveband when structure angle is 39.5°
CWL /μm 0.380 0.410 0.443 0.490 0.670 0.865 1.380 1.610 2.250
Angle of e-ray incidence /(°) 3.47 3.64 3.78 3.93 4.23 4.38 4.52 4.56 4.64
Angle of o-ray incidence /(°) 5.31 4.99 4.71 4.41 3.80 3.48 3.01 2.82 2.20

Table 2. Design parameters of modified Lyot depolarizer

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Table 2. Design parameters of modified Lyot depolarizer

CWL /μm	0.380	0.410	0.443	0.490	0.670	0.865	1.380	1.610	2.250
FWHM /μm	0.020	0.020	0.020	0.020	0.020	0.040	0.040	0.060	0.080
Diameter /mm	12	12	12	12	12	12	18	18	18
Thickness /mm	14.70	14.70	14.70	14.70	14.70	14.70	15.49	15.49	15.49
Angle of wedge /(°)	2
P	0.0015	0.0045	0.0034	0.0003	0.0070	0.0012	0.0046	0.0063	0.0011

Table 3. Degree of linear polarization (DOLP) and albedo of typical underlying surfaces
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Table 3. Degree of linear polarization (DOLP) and albedo of typical underlying surfaces
Surface Snow Cloud Desert Flatland Forest Ocean
DOLP ~0.03 ~0.08 ~0.1 0.17-0.27 0.32-0.45 0.21-0.59
Albedo 80%-96% 45%-87% ~52% 11%-30% 6%-11% 3%-7%

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Hongchun Yang, Jin Hong, Peng Zou, Maoxin Song, Benyong Yang, Zhenhai Liu. Onboard Polarization Calibrators of Spaceborne Particulate Observing Scanning Polarimeter[J]. Acta Optica Sinica, 2019, 39(9): 0912005

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Apr. 11, 2019

Accepted: May. 31, 2019

Published Online: Sep. 9, 2019

The Author Email: Yang Hongchun (hongyang@mail.ustc.edu.cn), Hong Jin (hongjin@aiofm.ac.cn)

DOI:10.3788/AOS201939.0912005

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Values of field angle calculated at each waveband when structure angle is 39.5°

Table 1. Values of field angle calculated at each waveband when structure angle is 39.5°

Table 2. Design parameters of modified Lyot depolarizer

Table 2. Design parameters of modified Lyot depolarizer

Table 3. Degree of linear polarization (DOLP) and albedo of typical underlying surfaces

Table 3. Degree of linear polarization (DOLP) and albedo of typical underlying surfaces