Negative reflection and total internal reflection at the internal surface of lithium niobate crystal

Sain, P and Hegde, G and Talabattula, S (2024) Negative reflection and total internal reflection at the internal surface of lithium niobate crystal. In: Journal of the Optical Society of America A: Optics and Image Science, and Vision, 41 (6). pp. 1194-1202.

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Abstract

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. © 2024 Optica Publishing Group.

Item Type:	Journal Article
Publication:	Journal of the Optical Society of America A: Optics and Image Science, and Vision
Publisher:	Optica Publishing Group (formerly OSA)
Additional Information:	The copyright for this article belongs to Optica Publishing Group (formerly OSA).
Keywords:	Anisotropy; Crystals; Incident light; Lithium; Niobium compounds; Polarization; Refractive index, Condition; Internal surfaces; Lithium niobate crystal; Negative reflection; Optical axis rotations; Poynting's vectors; Rotation angles; Total internal reflections; Uniaxial materials; Wave vector, Vectors
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	17 Aug 2024 12:02
Last Modified:	17 Aug 2024 12:02
URI:	http://eprints.iisc.ac.in/id/eprint/85457

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