H L Andrews et al 2006 New J. Phys. 8 289 doi:10.1088/1367-2630/8/11/289
Effect of reflections and losses in Smith–Purcell free-electron lasers
Focus on Accelerator and Beam PhysicsH L Andrews1, C H Boulware1, C A Brau1, J T Donohue2, J Gardelle3 and J D Jarvis1
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We have included the effects of losses in the grating surface and reflections at the ends of the grating in the theory of Smith–Purcell free-electron lasers. Computations show that losses typically increase the start current by about 10%. The complex reflection coefficient for the evanescent wave is computed using numerical simulations, and is found to have a magnitude on the order of 30%. This typically increases or decreases the start current by about 10%, depending on the phase of the round-trip reflection.
- PACS
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41.85.Ct Particle beam shaping, beam splitting
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation
- Subjects
- Dates
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Issue 11 (November 2006)
Received 28 June 2006
Published 28 November 2006
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Effect of reflections and losses in Smith–Purcell free-electron lasers
H L Andrews et al 2006 New J. Phys. 8 289
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