Jiao Xinbing, Xu Xiang, Zhang Yueyang
J Opt Soc Am A Opt Image Sci Vis. 2023 Jun 1;40(6):1016-1021. doi: 10.1364/JOSAA.489330.
Indium tin oxide (ITO) is widely used in optoelectronic devices due to its excellent optical and electrical properties. The real-time characterization of the ITO surface under electric and thermal fields plays an important role in determining its performance. The Goos-Hänchen (GH) and Imbert-Fedorov (IF) shifts and polarization properties of the dual circularly polarized lights reflected from ITO films can be used to describe its features. The dual circularly polarized lights, right circularly polarized (RCP, ≈+1) and left circularly polarized (LCP, ≈-1) lights, are obtained by rotating the linear polarizer and quarter-wave plate. The polarization properties and the lateral shifts of the RCP and LCP lights were studied by a polarimeter and a slim beam profiler. The results show that the polarization properties of the dual circularly polarized lights are mainly affected by temperature. The degree of the polarization properties of the RCP and LCP lights changed from 97.85% to 97.40%, and from 98.40 % to 83.50%, respectively. The reflectivity of the RCP and LCP lights changed from 42.19% to 40.37%, and from 43.80% to 0.80%, respectively. The GH and IF shifts of the RCP light are 156.50 µm and186.00 µm, respectively. The GH and IF shifts of the LCP light are 233.00 µm and 257.00 µm, respectively. The ITO film has more effect on the LCP light than that of the RCP light due to its strong ITO film (400) plane.
氧化铟锡（ITO）因其优异的光学和电学性能而被广泛应用于光电器件中。在电场和热场作用下对ITO表面进行实时表征对于确定其性能起着重要作用。从ITO薄膜反射的双圆偏振光的古斯 - 汉欣（GH）和因伯特 - 费多罗夫（IF）位移以及偏振特性可用于描述其特征。双圆偏振光，即右旋圆偏振（RCP，≈ +1）光和左旋圆偏振（LCP，≈ -1）光，是通过旋转线性偏振器和四分之一波片获得的。利用偏振仪和细光束轮廓仪研究了RCP和LCP光的偏振特性及横向位移。结果表明，双圆偏振光的偏振特性主要受温度影响。RCP和LCP光的偏振度分别从97.85%变为97.40%，以及从98.40%变为83.50%。RCP和LCP光的反射率分别从42.19%变为40.37%，以及从43.80%变为0.80%。RCP光的GH和IF位移分别为156.50 µm和186.00 µm。LCP光的GH和IF位移分别为233.00 µm和257.00 µm。由于其较强的ITO薄膜（400）平面，ITO薄膜对LCP光的影响比对RCP光的影响更大。
