Infrared and Laser Engineering, Volume. 54, Issue 8, 20250178(2025)
Measurement and analysis of the scattering characteristics of transparent substrate sheets based on polarization separation
Figures & Tables(15)
Fig. 1. Schematic diagram of surface scattering and volume scattering
Fig. 2. (a) The polarization angles of surface scattering vary with the incident angle and scattering angle; (b) The polarization angles of volume scattering vary with the incident angle and scattering angle
Fig. 3. Variation of polarization angle with scattering angle at different incident angles. (a)
Fig. 5. Schematic diagram of the optical path for surface scattering and volume scattering testing
Fig. 6. Optical path for surface scattering and volume scattering testing
Fig. 7. Volume scattering of transparent substrates with different thicknesses
Fig. 8. Variation trends of surface scattering and volume scattering under different surface roughness
Fig. 9. Measured values of surface scattering and volume scattering
Table 1. Measurement results of volume scattering for different substrate materials
View tableView in ArticleTable 1. Measurement results of volume scattering for different substrate materials
Material Gain level Calibration voltage/ mV Voltage/ μV Normalized intensity JGS1 105 37.8 104 0.0135 5.1×10−5 Corning7979 0.0109 4.1×10−5 ZF9 0.0219 8.2×10−5 Sapphire （Al2O3） 0.0077 2.9×10−5
Table 2. Volume scattering of transparent substrate sheets with different thicknesses
View tableView in ArticleTable 2. Volume scattering of transparent substrate sheets with different thicknesses
Thickness/mm Gain level Calibration voltage/mV Voltage/ μV Normalized intensity 1.5 105 37.8 104 0.0029 1.08×10−5 3 0.0038 1.42×10−5 5 0.0052 1.94×10−5
Table 3. Surface scattering of transparent substrates with different surface roughnesses
View tableView in ArticleTable 3. Surface scattering of transparent substrates with different surface roughnesses
Surface roughness/nm Power/W Surface scattering Volume scattering 0.1 1.03×10−8 1.16×10−5 0.3 9.00×10−8 1.17×10−5 0.5 2.50×10−7 1.19×10−5 1 1.00×10−6 1.25×10−5 2 4.00×10−6 1.51×10−5 3 1.30×10−5 1.95×10−5 4 2.32×10−5 2.58×10−5 5 3.62×10−5 3.36×10−5 6 5.22×10−5 4.36×10−5 7 7.10×10−5 5.51×10−5 8 9.28×10−5 6.83×10−5 9 1.07×10−4 7.07×10−5 10 1.12×10−4 7.37×10−5
Table 4. Parameters of the sample sheets
View tableView in ArticleTable 4. Parameters of the sample sheets
Material Size Surface roughness PV Sapphire Φ20×3 mm 3 nm $ \dfrac{\lambda }{5} $
Table 5. Data recording and calculation form
View tableView in ArticleTable 5. Data recording and calculation form
$ {\theta }_{i} $ $ {\theta }_{s} $ Ψ Calibration voltage/mV Voltage Normalized intensity π/2+α π/2+β Surface scattering voltage/mV Volume scattering voltage/mV Gain level π/2+α π/2+β 60 30 69.34 57.11 37.8×104 0.00347 0.0037 105 1.05×10−5 1.38×10−5 50 40 72.70 58.58 0.00513 0.0048 105 1.49×10−5 1.75×10−5 43 47 73.06 58.73 0.00560 0.0053 105 1.62×10−5 1.92×10−5 45 45 73.13 58.76 5.54 2.35 104 6.78×10−2 8.49×10−2 47 43 73.06 58.73 0.00594 0.0050 105 1.72×10−5 1.82×10−5 40 50 72.70 58.58 0.00558 0.0044 105 1.62×10−5 1.61×10−5 30 60 69.34 57.11 0.0044 0.0041 105 1.18×10−5 1.37×10−5
Table 6. Scattering intensity of the sample sheet with a roughness of 0.3 nm and a thickness of 3 mm
View tableView in ArticleTable 6. Scattering intensity of the sample sheet with a roughness of 0.3 nm and a thickness of 3 mm
Material Thickness Surface roughness Normalized intensity Sapphire 3 mm 0.3 nm 1.44×10−5
Tools
Get Citation
Copy Citation Text
Jiashi YAO, Zhaohui LI, Zhen MAO, Wei LIU, Liang NIE, Quan ZHOU, Yong LIU, Shasha YIN. Measurement and analysis of the scattering characteristics of transparent substrate sheets based on polarization separation[J]. Infrared and Laser Engineering, 2025, 54(8): 20250178
Paper Information
Category: 光电测量
Received: Mar. 17, 2025
Accepted: --
Published Online: Aug. 29, 2025
The Author Email: Zhaohui LI (lizhaohui@opt.ac.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20