Phase Only 128x128 Spatial Light Modulator Based On Laslm Technology
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Phase Only 128x128 Spatial Light Modulator Based On Laslm Technology
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Author :
language : en
Publisher:
Release Date : 1993
Phase Only 128x128 Spatial Light Modulator Based On Laslm Technology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
This contract was for the purpose of building 128xl28 pixel spatial light modulator capable of phase-only modulation using TI's unique flexure beam deformable mirror device (DMD) technology. The flexure beam DMD contains mirror elements that move vertically in response to an electrostatic force. The resulting piston-like motion provides broad range analog phase modulation with minimal amplitude modulation. Problems in the CCD addressing prevented the completion and delivery of a fully functioning device. Optical processing, Spatial light modulators, Phase-only filters, Target recognition, Electro-optic devices.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1994
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 199?
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 199? with categories.
Spatial Light Modulators
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Author : Uzi Efron
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 2001
Spatial Light Modulators written by Uzi Efron and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.
Spatial Light Modulator Technology
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Author : Uzi Efron
language : en
Publisher: CRC Press
Release Date : 1994-09-29
Spatial Light Modulator Technology written by Uzi Efron and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-09-29 with Technology & Engineering categories.
This work offers comprehensive coverage of all aspects of spatial light modulators, from the various optical materials used for modulation, through the availability and characteristics of specific devices, to the main applications of SLMs and related systems. The gamut of SLMs is surveyed, including multiple-quantum-well, acousto-optical, magneto-optical, deformable-membrane, ferroelectric-liquid-crystal and smart-pixel modulators.
Low Voltage Spatial Light Modulator
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Author : A. Papavasiliou
language : en
Publisher:
Release Date : 2003
Low Voltage Spatial Light Modulator written by A. Papavasiliou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
This project studied the feasibility of a Low-Voltage actuator technology that promises to reduce the switched voltage requirements and linearize the response of spatial light modulators. We created computer models that demonstrate substantial advantages offered by this technology, and fabricated and tested those devices. SLMs are electro-optic devices for modulating the phase, amplitude or angle of light beams, laser or other. Applications for arrays of SLMs include turbulence correction for high-speed optical communications, imaging through distorting media, input devices for holographic memories, optical manipulation of DNA molecules, and optical computers. Devices based on micro electro-mechanical systems (MEMS) technology have recently become of special interest because of their potential for greatly improved performance at a much lower cost than piezoelectric or liquid crystal based devices. The new MEMS-based SLM devices could have important applications in high-speed optical communication and remote optical sensing, in support of DoD and DOE missions. Virtually all previously demonstrated MEMS SLMs are based on parallel-plate capacitors where an applied voltage causes a mirror attached to a suspended electrode to move towards a fixed electrode. They require relatively high voltages, typically on the order of 100 V, resulting in (1) large transistor sizes, available only from specialized foundries at significant cost and limiting the amount/sophistication of electronics under each SLM pixel, and (2) large power dissipation/area, resulting in a heat removal issue because of the optical precision required ({approx} 1/50-th of a wavelength). The actuator described in this process uses an advanced geometry that was invented at LLNL and is currently still proprietary. The new geometry allows the application of a bias voltage. This applied bias voltage results in a reduction of the required switched voltage and a linearization of the response curve. When this advanced actuator is coupled with non-linear springs, the response curve becomes even more linear. The response curve of the springs is tailored to produce an actuator with extremely linear displacement vs. voltage characteristics.
Fourier Based Optical Analysis Of A Membrane Mirror Spatial Light Modulator
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Author : Michael Joshua Whitson
language : en
Publisher:
Release Date : 2017
Fourier Based Optical Analysis Of A Membrane Mirror Spatial Light Modulator written by Michael Joshua Whitson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
This thesis presents the operational theory and engineering numerical models for the operation of a schlieren-like Fourier optical system, used to read out a phase-only spatial light modulator (SLM) for phase to intensity conversion. The computational model, based on discrete cosine transforms, is lightweight enough to be run on standard desktop computers, and flexible enough to allow engineering simulations of arbitrary pixel phase profiles, including empirical datasets. We apply these models to case studies of the design and simulation of pixel geometries and readout system designs for a MEMS-based membrane mirror spatial light modulator (MMSLM), for use as a projection display at a range of visible and infrared wavelengths. Output images, contrast curves and pixel uniformities are simulated for each case study. Simulation results indicate the use of a zero-order blocking spatial filter when high contrast is prioritized, while a zero-order passing spatial filter provides enhanced uniformity of arrays of many pixels. Key engineering rules of thumb and a sample design flow are provided for the design of future phase-contrast projection systems.
Design And Construction Of An Optical Binary Phase Only Correlator Using A Liquid Crystal Television As A Spatial Light Modulator
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Author : Scott Wesley Coffin
language : en
Publisher:
Release Date : 1991
Design And Construction Of An Optical Binary Phase Only Correlator Using A Liquid Crystal Television As A Spatial Light Modulator written by Scott Wesley Coffin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Light modulators categories.
Electron Beam Phase Only Spatial Light Modulator For Matched Filtering
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Author : Cardinal Warde
language : en
Publisher:
Release Date : 1989
Electron Beam Phase Only Spatial Light Modulator For Matched Filtering written by Cardinal Warde and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.