Journal ArticleDOI
Implementation of single-beam multiplexing encoding with a dually modulated spatial light modulator
TLDR
A single-beam directional multiplexing method using a holographic encoding technique, which is more stable, miniaturized, and flexible, should be of great interest for applications in signal encryption as well as for high-capacity data storage.Abstract:
We propose a novel method for signal storage and encryption, called single-beam multiplexing encoding. The single beam is composed of an inside signal beam and an outside reference beam. The signal beam is amplitude modulated, and the reference beam is phase modulated. The dual modulation is implemented by a spatial light modulator (SLM). Multiplexing holography with different reference beams from different directions, called directional multiplexing, is analyzed in detail. With an SLM based on a twisted nematic liquid crystal display, we demonstrate a single-beam directional multiplexing method using a holographic encoding technique, and the retrieved signals are presented. This encoding system is more stable, miniaturized, and flexible. It should be of great interest for applications in signal encryption as well as for high-capacity data storage.read more
Citations
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Journal ArticleDOI
Measurement of characteristics and phase modulation accuracy increase of LC SLM "HoloEye PLUTO VIS"
A.P. Bondareva,Pavel A. Cheremkhin,N. N. Evtikhiev,Vitaly V. Krasnov,Rostislav S. Starikov,S N Starikov +5 more
TL;DR: In this article, the authors present results of measurement of characteristics and phase modulation accuracy increase of state of the art phase liquid crystal spatial light modulators with HD resolution "HoloEye PLUTO VIS".
Journal ArticleDOI
Binary image encryption based on interference of two phase-only masks
TL;DR: A very simple method for binary image encryption based on interference of two phase-only masks is proposed without any silhouette problem and may find applications in the information processing field.
Journal ArticleDOI
Flicker in a twisted nematic spatial light modulator
Yuliana Calderón-Hermosillo,Jorge García-Márquez,Jorge García-Márquez,Rafael Espinosa-Luna,Noé Alcalá Ochoa,Víctor Lopez,Alberto Aguilar,Enrique Noé-Arias,Yasser Alayli +8 more
TL;DR: In this paper, the authors compared the flicker behavior of a twisted nematic (TN) LCoS-SLM for different polarization schemes and temperatures, and showed that flicker is effectively reduced only by chilling the L-CoS panel to temperatures just below 0°C.
Journal ArticleDOI
Coaxial holographic encoding based on pure phase modulation.
TL;DR: A simple technique for coaxial holographic image recording and reconstruction, employing a spatial light modulator (SLM) modified in pure phase mode, which will have potential applications in areas such as holographic encryption and high-density disk storage systems.
Optical properties of holographically generated twisted nematic liquid crystal gratings
Hyunhee Choi,J. W. Wu +1 more
TL;DR: In this paper, a transcis photoisomerization process occurring in an azo-benzene side chain was used to produce twisted nematic liquid-crystal (LC) gratings.
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