Publication:
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.
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Conference Proceedings
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Physics
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The authors are grateful for the support from NAVSEA, ONR, and the JTO.
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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.
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