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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
16 Oct 1989
TL;DR: In this article, a reconfigurable optical interconnect is proposed that redirects an optical beam through embedded holographic elements of a substrate-mode hologram to connecting information processors or to photonic switching devices.
Abstract: The present invention discloses a reconfigurable optical interconnect apptus that redirects an optical beam through embedded holographic elements of a substrate-mode hologram to connecting information processors or to photonic switching devices. The apparatus includes a substrate-mode hologram, including a polarization insensitive input hologram member, one or more embedded polarization sensitive hologram members that couple transmitted diffracted or non-diffracted light to respective optical receivers. The optical receivers further couple the light out of the substrate-mode hologram or to cascaded similar apparatus. The method includes processing an incident beam of polarized light through a controlled polarization modulator, through an optical information encoder, such as a spatial light modulator, then further processing the polarized light through the substrate-mode hologram. The apparatus has advantages of being compact and expandable into larger systems.

40 citations

Journal ArticleDOI
TL;DR: This work generates a spatial frequency comb by modulating the incident angle of a monochromatic plane wave with a spatial light modulator (SLM) to enable dispersion-free depth sensing that is free from mechanical moving components.
Abstract: As an alternative to the conventional optical frequency comb technique, a spatial frequency comb technique is proposed for dispersionfree optical coherence depth sensing. Instead of generating an optical frequency comb over a wide range of time spectrum, we generate a spatial frequency comb by modulating the incident angle of a monochromatic plane wave with a spatial light modulator (SLM). The use of monochromatic light combined with the SLM enables dispersion-free depth sensing that is free from mechanical moving components.

40 citations

Journal ArticleDOI
TL;DR: In this paper, the authors introduce the principles of phase-only Spatial Light Modulator (SLM) and discuss the main phase calibration methods, and compare the advantages of these methods.
Abstract: Phase-only Spatial Light Modulator (SLM) is one of the most widely used devices for phase modulation. It has been successfully applied in the field with requirements of precision phase modulation such as holographic display, optical tweezers, lithography, etc. However, due to the limitations in the manufacturing process, the grayscale-phase response could be different for every single SLM device, even varying on sections of an SLM panel. A diverse array of calibration methods have been proposed and could be sorted into two categories: the interferometric phase calibration methods and the diffractive phase calibration methods. The principles of phase-only SLM are introduced. The main phase calibration methods are discussed and reviewed. The advantages of these methods are analyzed and compared. The potential methods for different applications are suggested.

40 citations

Patent
28 Mar 2005
TL;DR: An image exposure device includes an exposure head for forming a desired pattern on a photosensitive material as discussed by the authors, which is equipped with a light source for emitting a great number of light beams, a spatial light modulator, a micro lens array, and a total of two or more aperture arrays.
Abstract: An image exposure device includes an exposure head for forming a desired pattern on a photosensitive material. The exposure head is equipped with a light source for emitting a great number of light beams, a spatial light modulator in which a great number of pixel portions are arranged for independently modulating the light beams emitted from the light source, a micro lens array in which a great number of micro lenses are arranged for individually converging the great number of light beams modulated by the pixel portions, and a total of two or more aperture arrays arranged in the stage before the micro lens array and/or the stage after the micro lens array. Each of the aperture arrays has a great number of apertures for individually restricting the light beams.

40 citations

Journal ArticleDOI
TL;DR: In this article, the authors measure the monochromatic transmission matrix (TM) of an optical multiple scattering medium using a spatial light modulator together with a phase-shifting interferometry measurement method.
Abstract: We experimentally measure the monochromatic transmission matrix (TM) of an optical multiple scattering medium using a spatial light modulator together with a phase-shifting interferometry measurement method. The TM contains all information needed to shape the scattered output field at will or to detect an image through the medium. We confront theory and experiment for these applications and we study the effect of noise on the reconstruction method. We also extracted from the TM informations about the statistical properties of the medium and the light transport whitin it. In particular, we are able to isolate the contributions of the Memory Effect (ME) and measure its attenuation length.

40 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023137
2022321
2021266
2020451
2019460
2018452