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Amphoteric refraction exhibited by anisotropic crystals |
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| Authors: | Jung-Ping Liu Hon-Fai Yau Zhen Ye Chao-Hsien Kuo BoWen Ke |
| Institution: | aInstitute of Optical Sciences, National Central University, Chungli 320, Taiwan, ROC;bDepartment of Photonics, Feng Chia University, Taichung 407, Taiwan, ROC;cDepartment of Physics, National Central University, Chungli 320, Taiwan, ROC |
| Abstract: | Amphoteric refraction of light ray at the interface between isotropic materials and anisotropic materials is analyzed. Depending on the incident angle, the refractive light ray can either refract positively or negatively. This amphoteric refraction phenomenon can be quite prevalent when the difference of the two principal refractive indices is large. The reflectance under various incident angles has also been calculated, and an experimental demonstration with a calcite crystal in air is presented. |
| Keywords: | Amphoteric refraction Abnormal refraction Anisotropic medium Normal surface |
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