Chinese Optics Letters, 2007, 5 (2): 108, Published Online: Feb. 8, 2007
Research on refractive index of optical cement used in Glan-Thompson prisms Download: 738次
光学器件 偏振光学 光学胶折射率 格兰-汤普森棱镜 结构角 视场角 光强透射比 230.5440 Polarization-selective devices 230.0230 Optical devices 260.5430 Polarization
Abstract
The influence of the refractive index n2 of optical cement on the structure angle, field angle, and transmission of Glan-Thompson prism has been studied in detail. The results show that the structure angle will increase with the decrease of n2 under the condition of the largest field angle. Thus, the ratio of length to width (L/A) of the prism will decrease, which means more materials can be saved. When the value of L/A is 3.0 or 2.5 in the routine design, the field angle will firstly increase and then decrease with the increment of n2. Two routine designs with the n2 values of 1.47 and 1.45 have the optimal field angle. In addition, n2 also has great influence on light intensity transmittance of the prism. Considering all these factors, it will be the best choice with L/A=2.5 and n2=1.45-1.46.
Haifeng Wang, Fuquan Wu, Hailong Wang, Jing Wang, Shan Zhang. Research on refractive index of optical cement used in Glan-Thompson prisms[J]. Chinese Optics Letters, 2007, 5(2): 108.