Dickson L D, Rallison R D, Yung B H
Appl Opt. 1994 Aug 10;33(23):5378-85. doi: 10.1364/AO.33.005378.
Volume holographic optical elements exhibit a property that we call bidiffringence, in which the diffraction efficiency of the element is strongly dependent on the polarization of the incident beam. Dualelement, volume holographic polarization separators utilizing bidiffringence can provide high extinction ratios, and they can provide greater angular separation of the polarized beams and greater flexibility in the beam-separation parameters than conventional birefringent elements. We designed and constructed holographic polarization separators using dichromated gelatin as the holographic medium. Experimental results are compared with the results predicted by the Kogelnik coupled wave theory.
体全息光学元件呈现出一种我们称之为双折射的特性，其中该元件的衍射效率强烈依赖于入射光束的偏振态。利用双折射的双元件体全息偏振分离器能够提供高消光比，并且与传统双折射元件相比，它们能够提供偏振光束更大的角分离以及在光束分离参数方面更大的灵活性。我们设计并制作了以重铬酸盐明胶作为全息介质的全息偏振分离器。将实验结果与科格耳尼克耦合波理论所预测的结果进行了比较。
