Image Processing And Control Of A Programmable Spatial Light Modulator For Spatial Beam Shaping
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Page : 14 pages
File Size : 41,86 MB
Release : 2013
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Page : 14 pages
File Size : 41,86 MB
Release : 2013
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Page : 14 pages
File Size : 15,48 MB
Release : 2010
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The heart of the National Ignition Facility is a megajoule-class laser system consisting of 192 beams used to drive inertial confinement fusion reactions. A recently installed system of programmable, liquid-crystal-based spatial light modulators adds the capability of arbitrarily shaping the spatial beam profiles in order to enhance operational flexibility. Its primary intended use is for introducing 'blocker' obscurations shadowing isolated flaws on downstream optical elements that would otherwise be damaged by high fluence laser illumination. Because an improperly shaped blocker pattern can lead to equipment damage, both the position and shape of the obscurations must be carefully verified prior to high-fluence operations. An automatic alignment algorithm is used to perform detection and estimation of the imposed blocker centroid positions compared to their intended locations. Furthermore, in order to minimize the spatially-varying nonlinear response of the device, a calibration of the local magnification is performed at multiple sub-image locations. In this paper, we describe the control and associated image processing of this device that helps to enhance the safety and longevity of the overall system.
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Page : 13 pages
File Size : 15,57 MB
Release : 2011
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Author : Carmelo Rosales-Guzmán
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Page : 50 pages
File Size : 23,89 MB
Release : 2017
Category : Beam optics
ISBN : 9781510613027
Structuring light is a ubiquitous laboratory tool, and computer-controlled devices such as spatial light modulators (SLMs) can reshape an input beam into almost any desired output beam. This Spotlight ranges the basic principles of these devices to some of the most advanced techniques in beam shaping. Many examples have been included to make this guide more comprehensive and help those shaping beams with a SLM for the first time. The provided examples are based in MATLAB, but they can be easily adapted to other programing languages. Readers need only an undergraduate level of mathematics and a basic knowledge of programming.
Author : Jennifer Louise Croissant
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Page : 80 pages
File Size : 44,89 MB
Release : 1987
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Author : Uzi Efron
Publisher : CRC Press
Page : 688 pages
File Size : 37,6 MB
Release : 1994-09-29
Category : Technology & Engineering
ISBN : 9780824791087
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.
Author : Wolfgang Osten
Publisher : John Wiley & Sons
Page : 471 pages
File Size : 13,53 MB
Release : 2012-09-10
Category : Science
ISBN : 3527648461
A comprehensive review of the state of the art and advances in the field, while also outlining the future potential and development trends of optical imaging and optical metrology, an area of fast growth with numerous applications in nanotechnology and nanophysics. Written by the world's leading experts in the field, it fills the gap in the current literature by bridging the fields of optical imaging and metrology, and is the only up-to-date resource in terms of fundamental knowledge, basic concepts, methodologies, applications, and development trends.
Author : Richard Lee Sutherland
Publisher : SPIE-International Society for Optical Engineering
Page : 176 pages
File Size : 19,14 MB
Release : 1998
Category : Computers
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Author : Sher Amir Nasir
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Page : 152 pages
File Size : 38,43 MB
Release : 1994
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Author : William James Cassarly
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Page : 664 pages
File Size : 14,59 MB
Release : 1990
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