Infrared and Laser Engineering, Volume. 49, Issue 4, 0414004(2020)
Analysis of absorption characteristics of polluted particles on optical mirrors
Figures & Tables(13)
Fig. 2. Internal electric field strength of contaminated particles with different sizes
Fig. 3. Absorption of polluted particles with different refractive index (a) real part and (b) virtual part
Fig. 4. Distribution of polluted particles on optical mirrors with different cleanliness
Fig. 5. Ratio of absorptive value of particles of different sizes to total absorptive value of particles in different cleanliness
Fig. 6. Ratio of absorptive value of specular dust to total dust collection at different wavelengths
Fig. 7. Ratio of polluted particle absorption to total absorption of specular particle with different refractive index
Fig. 8. Effects of air cleanliness on specular particulate pollutant absorption
Fig. 9. Influence of orientation of different working faces on absorption
Table 1. Refractive index of dust at different wavelengths
View tableView in ArticleTable 1. Refractive index of dust at different wavelengths
Item Value λ /μm0.325 0.633 1.15 3.39 10.6 n 1.53+0.01 i 1.53+0.000 5 i 1.5+0.001 i 1.5+0.02 i 1.7+0.2 i
Table 2. Absorption efficiency of different air cleanliness grades
View tableView in ArticleTable 2. Absorption efficiency of different air cleanliness grades
Air class 1 000 10 000 100 000 Absorption(0.633 μm) 2.80×10−8 1.92×10−7 1.31×10−6 Absorption (1.15 μm) 3.46×10−8 2.37×10−7 1.62×10−6
Table 3. Absorption efficient for different placement
View tableView in ArticleTable 3. Absorption efficient for different placement
Placement Horizontal downward surface Verticle surface Horizontal upward surface Absorption (0.633 μm) 1.94×10−10 2.33×10−9 2.80×10−8 Absorption (1.15 μm) 2.39×10−10 2.88×10−9 3.46×10−8
Table 4. Absorption efficiency at exposure times
View tableView in ArticleTable 4. Absorption efficiency at exposure times
Exposure time 1 d 10 d 20 d Absorption(0.633 μm) 2.80×10−8 3.37×10−7 7.13×10−7 Absorption(1.15 μm) 3.46×10−8 4.16×10−7 8.80×10−7
Tools
Get Citation
Copy Citation Text
Xiang Wang, Kepeng Zhang, Zhuang Chen, Bin Zhang, Jian Chen, Jianhua Zhao. Analysis of absorption characteristics of polluted particles on optical mirrors[J]. Infrared and Laser Engineering, 2020, 49(4): 0414004
Paper Information
Received: Jan. 6, 2020
Accepted: --
Published Online: May. 27, 2020
The Author Email: Zhang Bin (zhangbinff@sohu.com)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20