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87:, phased-array optics refers to arrays of lasers or SLMs with addressable phase and amplitude elements smaller than a wavelength of light. While still theoretical, such high-resolution arrays would permit extremely realistic three-dimensional image display by dynamic holography with no unwanted orders of diffraction. Applications for weapons, space communications, and
34:. By dynamically controlling the optical properties of a surface on a microscopic scale, it is possible to steer the direction of light beams (in an OPA transmitter), or the view direction of sensors (in an OPA receiver), without any moving parts. Phased-array beam steering is used for optical switching and multiplexing in
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phase-shifted light is input to a radiating element (a nanophotonic antenna) that couples the light into free space. Light radiated by the elements is combined in the far-field and forms the far-field pattern of the array. By adjusting the relative phase shift between the elements, a beam can be formed and steered.
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In an optical phased-array receiver, the incident light (usually coherent light) on a surface is captured by a collection of nanophotonic antennas that are placed on a 1D or 2D array. The light received by each element is phase-shifted and amplitude-weighted on a chip. These signals are then added
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An optical phased-array transmitter includes a light source (laser), power splitters, phase shifters, and an array of radiating elements. The output light of the laser source is split into several branches using a power splitter tree. Each branch is then fed to a tunable phase shifter. The
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together in the optic or electronic domain to form a reception beam. By adjusting the phase shifts, the reception beam can be steered to different directions, and light incident from each direction is collected selectively.
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is the technology of controlling the phase and amplitude of light waves transmitting, reflecting, or captured (received) by a two-dimensional surface using adjustable surface elements. An
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49:, such as dynamic virtual lenses, for beam focusing or splitting in addition to aiming. Dynamic phase variation can also produce real-time
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Chung S.; et al. (Jan 2018). "A Monolithically
Integrated Large-Scale Optical Phased Array in Silicon-on-Insulator CMOS".
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441:. Conference on Lasers and Electro-Optics, OSA Technical Digest (2016). Optical Society of America. pp. STu3G.3
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53:. Devices permitting detailed addressable phase control over two dimensions are a type of
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Sun J.; et al. (January 1, 2013). "Large-scale nanophotonic phased array".
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Complicated patterns of phase variation can be used to produce
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101:'s Excalibur program aims to provide realtime correction of
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Animation of beam steering using phased arrays on YouTube
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438:A One-Dimensional Heterodyne Lens-Free OPA Camera
150:Proceedings of the IEEE, Laser Radar Applications
390:(16). Optical Society of America: 21012–21022.
249:(23). Optical Society of America: 29983–29999.
182:(195). Nature Publishing Group, a division of
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144:McManamon P. F.; et al. (May 15, 1996).
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474:Molecular Speculations on Global Abundance
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298:(1). Optical Society of America: 21–24.
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30:) is the optical analog of a radio-wave
234:Fatemi R.; et al. (Nov 12, 2018).
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337:IEEE Journal of Solid-State Circuits
643:High-temperature superconductivity
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146:"Optical phased array technology"
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380:"Nanophotonic projection system"
286:Poulton C.; et al. (2017).
435:Fatemi R.; et al. (2016).
648:High-temperature superfluidity
42:beams on a macroscopic scale.
1:
513:Eshel, Tamir (7 March 2014).
184:Macmillan Publishers Limited
47:diffractive optical elements
470:. In B. C. Crandall (ed.).
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785:Thermoacoustic heat engine
95:have also been suggested.
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770:Immersive virtual reality
675:Multi-function structures
357:10.1109/JSSC.2017.2757009
753:Digital scent technology
690:Molecular nanotechnology
653:Linear acetylenic carbon
840:Hypothetical technology
125:Spatial light modulator
55:spatial light modulator
38:devices and for aiming
16:Light wave manipulation
775:Magnetic refrigeration
103:atmospheric turbulence
748:Cloak of invisibility
663:Metamaterial cloaking
585:Emerging technologies
468:"Phased Array Optics"
405:10.1364/OE.23.021012
343:(1). IEEE: 275–296.
313:10.1364/OL.42.000021
264:10.1364/OE.26.029983
105:for a laser weapon.
24:optical phased array
780:Phased-array optics
738:Acoustic levitation
707:Programmable matter
544:Phased Array Optics
396:2015OExpr..2321012A
349:2018IJSSC..53..275C
304:2017OptL...42...21P
255:2018OExpr..2629983F
200:10.1038/nature11727
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20:Phased-array optics
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623:Conductive polymer
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482:. pp.
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186:: 195–199.
61:Transmitter
824:Categories
670:Metal foam
499:2007-02-18
160:2007-02-18
131:References
115:Holography
633:Fullerene
480:MIT Press
292:Opt. Lett
216:205231845
51:holograms
717:Silicene
638:Graphene
466:(1996).
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322:28059212
273:30469879
208:23302859
109:See also
70:Receiver
608:Aerogel
525:9 March
484:147–160
464:Wowk B.
392:Bibcode
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57:(SLM).
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176:Nature
731:Other
418:S2CID
361:S2CID
239:(PDF)
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99:DARPA
40:laser
808:List
527:2014
488:ISBN
447:2019
410:PMID
318:PMID
269:PMID
204:PMID
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