Spatial light modulators with changeable phase masks for use in holographic data storage

MA Handschy, MJ O'callaghan - US Patent 7,733,557, 2010 - Google Patents
(57) A holographic data storage system that includes a write head that includes a pixellated
spatial light modulator and a sepa rate or integral phase mask that varies the phase …

Methods and algorithms for computer synthesis of holographic elements to obtain a complex impulse response of optical information processing systems based on …

EY Zlokazov - Quantum Electronics, 2020 - iopscience.iop.org
The possibilities of designing optical devices for data processing and imaging based on the
manipulation of coherent light beams by means of spatial light modulators (SLMs) are …

Mesomorphic, optical and DFT aspects of near to room-temperature calamitic liquid crystal

AA Zaki, M Hagar, RB Alnoman, M Jaremko… - Crystals, 2020 - mdpi.com
A new liquid crystalline, optical material-based Schiff base core with a near to room-
temperature mesophase,(4-methoxybenzylideneamino) phenyl oleate (I), was prepared …

Homogenized Fourier transform holographic data storage using phase spatial light modulators and methods for recovery of data from the phase image

J Joseph, DA Waldman - Applied optics, 2006 - opg.optica.org
We present a method for homogenizing the Fourier spectrum for holographic digital data
storage by use of a phase spatial light modulator (SLM), and methods for the recovery of …

Holographic digital data storage using phase-modulated pixels

R John, J Joseph, K Singh - Optics and Lasers in Engineering, 2005 - Elsevier
We propose and demonstrate the use of phase images for holographic data storage. Use of
phase images as input leads to uniform diffraction efficiency of multiplexed data pages. Use …

Novel phase detection method for a holographic data storage system using two interferograms

M He, L Cao, Q Tan, Q He, G ** - Journal of Optics A: Pure and …, 2009 - iopscience.iop.org
Data page phase modulation is attracting interest as an alternative to amplitude modulation
in holographic data storage for a homogenized Fourier spectrum. The problem with phase …

Hybrid ternary modulation applied to multiplexing holograms in photopolymers for data page storage

E Fernandez, A Márquez, S Gallego… - Journal of Lightwave …, 2010 - opg.optica.org
Holographic data storage is a new optical technology, which allows an important number of
bits to be stored in a recording material. In this paper, holographic data pages were stored in …

Phase-to-amplitude data page conversion for holographic storage and optical encryption

P Koppa - Applied optics, 2007 - opg.optica.org
A new phase-to-amplitude data page conversion method is proposed for efficient recovery of
the data encoded in phase-modulated data pages used in holographic storage and optical …

A novel three-dimensional holographic display system based on LC-R2500 spatial light modulator

H Zheng, Y Yu, C Dai - Optik, 2009 - Elsevier
A novel holographic display system is proposed in this paper. The system takes LC-R2500,
a kind of reflective liquid crystal spatial light modulator,(LC-SLM) as the core display unit …

Content-addressable holographic digital data storage based on hybrid ternary modulation with a twisted-nematic liquid-crystal spatial light modulator

R John, J Joseph, K Singh - Optical review, 2005 - Springer
We propose and demonstrate the use of hybrid ternary modulated digital pages for content-
addressable holographic data storage. Display of binary data pages with equal number of …