Sain Priyank, Hegde Gopalkrishna, Talabattula Srinivas
J Opt Soc Am A Opt Image Sci Vis. 2024 Jun 1;41(6):1194-1202. doi: 10.1364/JOSAA.522592.
In this paper we analytically find out the expression for the wave vector and Poynting vector in the reflection domain for negative uniaxial material. We investigate the impact of the optical axis rotation and incident angle on the wave vector and Poynting vector reflected from the internal surface of lithium niobate crystal when the light is propagating from the denser anisotropic medium to the rarer isotropic medium. We derive the Brewster angle condition and discuss the walk-off between TE and TM polarized light. We explore where the wave vector and Poynting vector are parallel after reflection. In further analysis, we look into the phase differences between ordinary and extraordinary reflected light after total internal reflection from the internal surface of lithium niobate crystal. The necessary conditions for linear polarization and circular polarization have been established. The impact of optical axis orientation is also taken into consideration. The refractive index for the isotropic material for the desired polarization response has been found as 2.18, 2.1, and 2.03 at 632 nm, 1550 nm, and 3500 nm, respectively.
在本文中，我们通过分析得出了负单轴材料在反射域中的波矢和坡印廷矢量的表达式。我们研究了光从较密集的各向异性介质传播到较稀薄的各向同性介质时，光轴旋转和入射角对从铌酸锂晶体内表面反射的波矢和坡印廷矢量的影响。我们推导了布儒斯特角条件，并讨论了TE和TM偏振光之间的离散。我们探究了反射后波矢和坡印廷矢量在何处平行。在进一步分析中，我们研究了从铌酸锂晶体内表面全内反射后寻常反射光和非寻常反射光之间的相位差。已经建立了线性偏振和圆偏振的必要条件。还考虑了光轴取向的影响。已发现对于所需偏振响应的各向同性材料，在632nm、1550nm和3500nm处的折射率分别为2.18、2.1和2.03。
