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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.


Papers
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Patent
26 Nov 2002
TL;DR: In this article, a projection system, a spatial light modulator, and a method for forming a MEMS device are disclosed, where two substrates are bonded at the wafer level after depositing a getter material and/or solid or liquid lubricant on one or both of the wafers if desired.
Abstract: A projection system, a spatial light modulator, and a method for forming a MEMS device are disclosed. The spatial light modulator can have two substrates bonded together with one of the substrates comprising a micro-mirror array. The two substrates can be bonded at the wafer level after depositing a getter material and/or solid or liquid lubricant on one or both of the wafers if desired. In one embodiment of the invention, one of the substrates is a light transmissive substrate and a light blocking layer that is preferably a light absorbing layer is provided on the light transmissive substrate to selectively block light from passing through the substrate. The light blocking layer can be formed as a pattern, such as a grid or strips for blocking light from entering gaps between adjacent micro-mirrors.

55 citations

Journal ArticleDOI
TL;DR: The utility of the method uses a Sagnac interferometer that incorporates a spatial light modulator to combine beams that possess oppositely charged phase vortices in order to achieve the desired polarization vortex is demonstrated.
Abstract: We present a method for producing laser beams of nonuniform polarization where the polarization direction rotates on a trajectory about the beam propagation direction. Our method uses a Sagnac interferometer that incorporates a spatial light modulator to combine beams that possess oppositely charged phase vortices in order to achieve the desired polarization vortex. We demonstrate the utility of our method by producing polarization vortices characterized by a fractional index, and we compare the results with calculations of the expected fields.

55 citations

Journal ArticleDOI
TL;DR: In this paper, a simple imaging system, together with complex semidefinite programming, is used to generate the transmission matrix (TM) of a multimode fiber, which is then modulated to induce strong mode interference at the fiber output.
Abstract: A simple imaging system, together with complex semidefinite programming, is used to generate the transmission matrix (TM) of a multimode fiber. Once the TM is acquired, we can modulate the phase of the input signal to induce strong mode interference at the fiber output. The optical design does not contain a reference arm, no internal reference signal is used, and no interferometric measurements are required. We use a phase-only spatial light modulator to shape the profile of the propagating modes, and the output intensity patterns are collected. The semidefinite program uses a convex optimization algorithm to generate the TM of the optical system using intensity only measurements. This simple, yet powerful, method can be used to compensate for modal dispersion in multimode fiber communication systems. It also yields great promise for the next generation biomedical imaging, quantum communication, and cryptography.

55 citations

Journal ArticleDOI
TL;DR: This work proposes a highly efficient approach to generating multihelix beams that contain more than one helical mode, and the power distribution over helical modes is adjustable.
Abstract: We propose a highly efficient approach to generating multihelix beams that contain more than one helical mode, and the power distribution over helical modes is adjustable. A multihelix beam embedded with three collinear helical modes is demonstrated by use of a spatial light modulator.

55 citations

Patent
24 Apr 2007
TL;DR: In this paper, a pixellated spatial light modulator and phase mask can be implemented in a liquid crystal SLM (neumatic, ferroelectric, or other), in a DMD SLM, in a magneto-optical SLM or in any other suitable manner.
Abstract: A holographic data storage system (20) that includes a write head that includes a pixellated spatial light modulator (30) and a separate or integral phase mask that varies the phase depending on the location in the phase mask that light passes through The phase variation can be changed over time in a random, pseudo-random, or predetermined fashion The spatial light modulator and phase mask can be implemented in a liquid crystal SLM (neumatic, ferroelectric, or other), in a DMD SLM, in a magneto-optical SLM, or in any other suitable manner

55 citations


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