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Accession Number
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DE2012-1045202
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Title
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Compact Couplers for Photonic Crystal Laser-Driven Accelerator Structures.
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Publication Date
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Jul 2012
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Media Count
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3p
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Personal Author
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B. Cowan B. Schwartz C. McGuinness E. Colby J. Spencer M. C. Lin R. Byer R. England R. Noble
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Abstract
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Photonic crystal waveguides are promising candidates for laser-driven accelerator structures because of their ability to confine a speed-of-light mode in an all-dielectric structure. Because of the difference between the group velocity of the waveguide mode and the particle bunch velocity, fields must be coupled into the accelerating waveguide at frequent intervals. Therefore efficient, compact couplers are critical to overall accelerator efficiency. We present designs and simulations of high-efficiency coupling to the accelerating mode in a three-dimensional photonic crystal waveguide from a waveguide adjoining it at 90(sup o). We discuss details of the computation and the resulting transmission. We include some background on the accelerator structure and photonic crystal-based optical acceleration in general.
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Keywords
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Acceleration
Accelerators
Crystal structures
Laser cavities
Photonic crystals
Simulation
Velocity
Waveguides
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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46 - Physics
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Corporate Author
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Stanford Linear Accelerator Center, Menlo Park, CA. Theory Group.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1302
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Contract Number
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DE-AC02-76SF00515
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