Table of Contents
Crystals, Volume 9, Issue 6 (June 2019)
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Cover Story (view full-size image) The recent advances in liquid crystal (LC) beam steering devices are reviewed. We first describe [...] Read more. The recent advances in liquid crystal (LC) beam steering devices are reviewed. We first describe the general operation principles of LC beam steerers. Next, we delve into different kinds of beam steering devices and propose a new LC‐cladding waveguide beam steerer using resistive electrodes. Finally, two future challenges are addressed: fast-response beam steering for mid‐wave infrared (MWIR), and large‐angle, high‐efficiency, and continuous beam steering by device hybridization. With new low‐loss polymer network LCs, fast-response transmission‐type optical phased arrays for MWIR can be achieved. View this paper