optical patterns controlled by computerized spatial light modulator
نویسندگان
چکیده
منابع مشابه
Analysis of spatial light modulator contrast ratios and optical correlation.
We have performed a general analysis of optical correlators with spatal light modulators (SLM's) whose primary defect is a finite contrast ratio (CR). Our mathematical analysis identifies three noise terms that appear in addition to the correlation term. The filter SLM contains either a phase-only filter (POF) or a binary-phase-only filter (BPOF). Insertion of a dc block at the center of the fi...
متن کاملAnamorphic optical transformation of an amplitude spatial light modulator to a complex spatial light modulator with square pixels [invited].
A method is proposed for the construction of a square pixel complex spatial light modulator (SLM) from a commercial oblong full-high-definition (full-HD) amplitude SLM using an anamorphic optical filter. In the proposed scheme, one half-band of the optical Fourier transform of the amplitude-only spatial light field is rejected in the optical Fourier plane and the other half-band is reformatted ...
متن کاملPosition and Intensity Modulations in Holographic Optical Traps Created by a Liquid Crystal Spatial Light Modulator
The addressing of the liquid crystals in spatial light modulators gives rise to temporal modulation of the phase pattern. Here we investigate the effect of this on the intensity and position of holographic optical traps. We use high-speed camera imaging of the laser spots back-reflected off the sample cover slip to determine the integrated pixel intensity and track the position of a laser spot....
متن کاملOptical phase encryption by phase contrast using electrically addressed spatial light modulator
We report the use of an electrically addressed liquid crystal spatial light modulator (EALCSLM) operating in the phase mode as a phase-contrast filter (PCF). As an application, an optical phase encryption system has been implemented. We encrypt and decrypt a two-dimensional phase image obtained from an amplitude image. Encrypted image is holographically recorded in a Barium titanate crystal and...
متن کاملA Spatial Light Modulator Using Bso Crystals
The combmed use of the photoelectnc and electro-optic properttes of the BI,,SIO~~ (BSO)-crystal leads to a new posslblhty of reahzmg a spa&xl hght modulator Under certam geometrical condrtions, whxh will be discussed, It 1s possible to reahze, that the BSO-crystal becomes blrefrmgent depending on the local fiummance, the physxal connection between the dlstnbutlons of blrefrmgence and lllummance...
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ژورنال
عنوان ژورنال: Al-Qadisiyah Journal Of Pure Science
سال: 2020
ISSN: 2411-3514,1997-2490
DOI: 10.29350/qjps.2020.25.2.1075