Topic
Spatial light modulator
About: Spatial light modulator is a research topic. Over the lifetime, 9043 publications have been published within this topic receiving 130143 citations.
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Patent•
19 Jun 1995TL;DR: In this article, a spatial light modulator printing system is calibrated by activating all of the elements of a spatial modulator to a predetermined state, wherein said predetermined state is the same state for all elements, by impinging light upon said modulator, by monitoring light received from said modulators at a sensor, such that elements that are defective are identified by discrepancies in the light received by those defective elements, and by using said information about said defective elements to adjust the operation of the modulators to correct any defects in a printed image caused by the defective elements.
Abstract: A spatial light modulator printing system is calibrated by activating all of the elements of a spatial light modulator to a predetermined state, wherein said predetermined state is the same state for all elements, by impinging light upon said modulator, by monitoring light received from said modulator at a sensor, such that elements that are defective are identified by discrepancies in the light received from those defective elements, and by using said information about said defective elements to adjust the operation of said modulator to correct any defects in a printed image caused by said defective elements.
231 citations
TL;DR: It is demonstrated that it is possible to reconstruct optically 3D objects using only phase information of the optical field calculated from phase-shifting digital holograms.
Abstract: A three-dimensional (3D) object reconstruction technique that uses only phase information of a phase-shifting digital hologram and a phase-only spatial-light modulator is proposed. It is well known that a digital hologram can store both amplitude and phase information of an optical electric field and can reconstruct the original 3D object in a computer. We demonstrate that it is possible to reconstruct optically 3D objects using only phase information of the optical field calculated from phase-shifting digital holograms. The use of phase-only information enables us to reduce the amount of data in the digital hologram and reconstruct optically the 3D objects using a liquid-crystal spatial light modulator without optical power loss. Numerical evaluation of the reconstructed 3D object is presented.
228 citations
TL;DR: Leach et al. as discussed by the authors described in detail the experiments in which vortex loops formed these structures and the experimental construction follows a theoretical model originally proposed by Berry and Dennis, and the beams are synthesized using a programmable spatial light modulator and imaged using a CCD camera.
Abstract: Optical vortices generically arise when optical beams are combined. Recently, we reported how several laser beams containing optical vortices could be combined to form optical vortex loops, links and knots embedded in a light beam (Leach et al 2004 Nature 432 165). Here, we describe in detail the experiments in which vortex loops form these structures. The experimental construction follows a theoretical model originally proposed by Berry and Dennis, and the beams are synthesized using a programmable spatial light modulator and imaged using a CCD camera.
228 citations
Patent•
01 Mar 1995TL;DR: In this article, a spatial light modulator is connected to a video memory connected to the processor to display the information on a moving display surface, where the modulator converts a stream of digital information to extract the information in a format to be usable with moving display surfaces.
Abstract: A digitized video system having a processor and a video memory. The processor converts a stream of digital information to extract the information in a format to be usable with a moving display surface. A spatial light modulator is connected to a video memory connected to the processor to display the information on a moving display surface.
227 citations
TL;DR: Correlation analyses between observed beam patterns and theoretical mode profiles reveal that higher beam quality is achieved for output LG beams generated from a top-hat input beam than from a Gaussian input beam.
Abstract: We report on the high-quality holographic generation of higher-order Laguerre-Gaussian (LG) beams using a liquid-crystal-on-silicon spatial light modulator. The effects of the input beam pattern on the output LG beam quality are investigated in detail through theoretical discussions and experiments. Correlation analyses between observed beam patterns and theoretical mode profiles reveal that higher beam quality is achieved for output LG beams generated from a top-hat input beam than from a Gaussian input beam.
226 citations