Generating switchable and reconfigurable optical vortices via photopatterning of liquid crystals.

Wei, Bing-yan; Hu, Wei; Ming, Yang; Xu, Fei; Rubin, Sam; Wang, Jian-guo; Chigrinov, Vladimir; Lu, Yan-qing · Adv Mater · 2014

basic_science · Level V

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Abstract

Liquid-crystal fork gratings are demonstrated through photopatterning realized on a DMD-based microlithography system. This supplies a new strategy for generating fast switchable, reconfigurable, wavelength-tolerant and polarization-insensitive optical vortices. The technique has great potential in broad fields such as OAM-based quantum computations, optical communications, and micromanipulation.