Short Rayleigh length free electron laser simulations in expanding coordinates / Proceedings of the 2004 FEL Conference
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Authors
Armstead, R.L.
Colson, W.B.
Blau, J.
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Date of Issue
2004
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Abstract
For compact short-Rayleigh length free electron lasers
(FELs), the area of the optical beam can be thousands of
times greater at the mirrors than at the beam waist. A fixed
numerical grid of sufficient resolution to represent the narrow
mode at the waist and the broad mode at the mirrors
would be prohibitively large. To accommodate this extreme
change of scale with no loss of information, we employ a
coordinate system that expands with the diffracting optical
mode. The simulation using the new expanding coordinates
has been validated by comparison to analytical cold-cavity
theory, and is now used to simulate short-Rayleigh length
FELs.
Type
Conference Proceedings
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Department
Physics
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The authors are grateful for the support from NAVSEA, ONR, and the JTO.
Format
Citation
R. L. Armstead et al. / Proceedings of the 2004 FEL Conference, 75-77
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.