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Effect of Density and Surface Roughness on Optical Properties of Silicon Carbide Optical Components |
| LIU Gui-Ling1,2;HUANG Zheng-Ren1;LIU Xue-Jian1;JIANG Dong-Liang1 |
| 1Structural Ceramics Engineering Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000502Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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LIU Gui-Ling, HUANG Zheng-Ren, LIU Xue-Jian et al 2008 Chin. Phys. Lett. 25 1135-1137 |
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Abstract The effect of density and surface roughness on the optical properties of silicon carbide optical components is investigated. The density is the major factor of the total reflectance while the surface roughness is the major factor of the diffuse reflectance. The specular reflectance of silicon carbide optical components can be improved by increasing the density and decreasing the surface roughness, in the form of reducing bulk absorption and surface-related scattering, respectively. The contribution of the surface roughness to the specular reflectance is much greater than that of the density. When the rms surface roughness decreases to 2.228nm, the specular reflectance decreases to less than 0.7% accordingly.
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| Keywords:
81.05.-t
42.79.-e
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Received: 19 September 2007
Published: 27 February 2008
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| PACS: |
81.05.-t
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(Specific materials: fabrication, treatment, testing, and analysis)
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42.79.-e
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(Optical elements, devices, and systems)
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