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[Editors Pick] Current Optics and Photonics Vol. 5 no. 3 (2021 June)

사무국 hit 260 date 2021-07-21

Binary-phase Complex Spatial Light Modulators Driven by Mirror Symmetry
Minho Choi and Jaewu Choi *

Department of Information Display, Kyung Hee University, Seoul 02447, Korea

 

Current Optics and Photonics  Vol. 5 No.3 (2021 June) pp. 261-269
DOI: https://doi.org/10.3807/COPP.2021.5.3.261

 


 

Fig. 1  Schematics of a BP-C-SLM. (a) A-SLM, (b) binary-phase spatial light modulators (BP-SLM), (c) physical combination of one A-SLM with one BP-SLM to achieve a BP-C-SLM, (d) an intrinsically fused BP-C-SLM, and (e) the information-doubling process, using the two physically combined SLMs or the intrinsically fused BP-C-SLM.

 

 

Abstract

Binary-phase complex spatial light modulators (BP-C-SLMs) are proposed and simulated. This study shows that bottom-top mirror-symmetrical uniaxial systems between two orthogonal polarizers allow one to construct BP-C-SLMs. BP-C-SLMs double the information-handling capacity per pixel, compared to the conventional amplitude-only spatial light modulators (A-SLMs), as well as being simply implemented with a single spatial light modulator (SLM), rather than a combination of an A-SLM and a binary-phase SLMs. Under limited conditions, BP-C-SLMs can control only the amplitude in single-phase space, and act as A-SLMs.