Zhao Huajun, Yuan Dairong
Department of Electronic and Electrical Engineering, Chongqing University of Arts and Sciences, 319 Red River Avenue, Yongchuan District, Chongqing 402160, China.
Appl Opt. 2010 Feb 10;49(5):759-63. doi: 10.1364/AO.49.000759.
Examples of optimal designs for a fused-silica transmitted grating with high-intensity tolerance are discussed. It has the potential of placing up to 99% incident polarized light in a single diffraction order. The modal method has been used to analyze the effective indices for TE and TM polarization propagating through the grating region, and the eigenvalue equation of the modal method is transformed to a new form. It is shown that the effective indices of the first two modes depend on the value of the period under Littrow mounting with filling factor f=0.5. The polarization properties of the polarizing beam splitter are analyzed by rigorous coupled-wave analysis (RCWA) at the wavelength of 1.064 microm. The optimal design perfectly matches the RCWA simulation result.
讨论了具有高功率耐受性的熔融石英透射光栅的优化设计示例。它有可能将高达99%的入射偏振光置于单一衍射级中。模态方法已被用于分析通过光栅区域传播的TE和TM偏振的有效折射率，并且模态方法的特征值方程被变换为一种新形式。结果表明，在前 Littrow 装置且填充因子 f = 0.5 的情况下，前两个模式的有效折射率取决于周期值。在波长为1.064微米时，通过严格耦合波分析（RCWA）分析了偏振分束器的偏振特性。优化设计与RCWA模拟结果完美匹配。
