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http://dx.doi.org/10.3807/COPP.2019.3.4.292

Directional Orbital Angular Momentum Generator with Enhanced Vertical Emission Efficiency

Tran, Thang Q. (Department of Electrical and Computer Engineering, Ajou University)
Kim, Sangin (Department of Electrical and Computer Engineering, Ajou University)

Publication Information

Current Optics and Photonics / v.3, no.4, 2019 , pp. 292-297 More about this Journal

Abstract

We propose a ring resonator-based orbital angular momentum carrying vortex beam generator design with high vertical directional emission efficiency. By adopting a vertically asymmetric grating structure in the ring resonator, optimized for enhanced vertical emission, an emission efficiency in one direction reaches as high as 78%, exceeding the 50% theoretical limit of previously designed vertically symmetric grating-assisted ring resonator-based structures.

Keywords

Optical orbital angular momentum; Vortex beam; Numerical modeling;

Citations & Related Records

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