Hsu A-Chuan, Ho Cheng-Fang, Chern Jyh-Long
Department of Physics, National Cheng Kung University, Tainan, Taiwan.
Appl Opt. 2002 Oct 1;41(28):5956-62. doi: 10.1364/ao.41.005956.
We numerically investigated the performance of an achromatic polarization-preserving beam displacer that was proposed by Galvez [Opt. Lett.26,971(2001)]. First, the four-prism configuration of the Galvez scheme is verified by simulation. We examined the extension of wavelength beyond visible light by considering the corresponding power loss. The degree of polarization is also considered. The tolerance of tilts of reflecting surfaces is comprehensively discussed. It is shown that the second reflector of a four-prism system is the most critical component. Performance of various materials, including plastics, is evaluated. We explain a simplified implementation based on two prisms (the classic Porro configuration), which also improves material performance.
我们对Galvez [《光学快报》26, 971(2001)]提出的消色差保偏光束位移器的性能进行了数值研究。首先，通过模拟验证了Galvez方案的四棱镜结构。我们通过考虑相应的功率损耗来研究波长向可见光以外的扩展。还考虑了偏振度。全面讨论了反射面倾斜的容差。结果表明，四棱镜系统的第二个反射镜是最关键的部件。评估了包括塑料在内的各种材料的性能。我们解释了一种基于两个棱镜的简化实现方式（经典的普罗型结构），这也提高了材料性能。
