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Anisotropy in Thermo-Optic Coefficient of Different Polymer Systems by Attenuated Total Reflection Configuration |
| LI Xiang;CAO Zhuang-Qi;SHEN Qi-Shun;MENG Qing-Hua;HUANG De-Ying;GUO Kun-Peng;QIU Ling;SHEN Yu-Quan |
| 1Department of Physics, Shanghai Jiaotong University, Shanghai 200240
2School of Chemistry and Engineering, Shanghai Jiaotong University, Shanghai 200240
3Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101 |
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LI Xiang, CAO Zhuang-Qi, SHEN Qi-Shun et al 2006 Chin. Phys. Lett. 23 998-1001 |
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Abstract Thermo-optic coefficient dn/dT as well as volume expansion coefficients β of different polymer systems are measured for both TE and TM polarizations in an attenuated total reflection (ATR) configuration. Experimental results indicate that cross-linked polymer systems exhibit the thermal expansion coefficients smaller than those of the original side-chain systems. Moreover, the anisotropies in thermo-optic coefficients of the polymer systems with small birefringence exhibit linear relationship with the anisotropies in volume expansion coefficients, but the polymer systems with larger birefringence exhibit more complicated relationship.
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78.20.Nv 78.66.Qn
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Published: 01 April 2006
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