Longitudinal Coherence Preservation and Chirp Evolution in a High Gain Laser Seeded Free Electron Laser Amplifier

Technical Report · Wed Jun 07 00:00:00 EDT 2006

DOI:https://doi.org/10.2172/883267· OSTI ID:883267

Murphy, J B; Wu, Juhao; Wang, X J; Watanabe, T

In this letter we examine the start-up of a high gain free electron laser in which a frequency-chirped coherent seed laser pulse interacts with a relativistic electron beam. A Green function formalism is used to evaluate the initial value problem. We have fully characterized the startup and evolution through the exponential growth regime. We obtain explicit expressions for the pulse duration, bandwidth and chirp of the amplified light and show that the FEL light remains fully longitudinally coherent.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 883267
• Report Number(s): SLAC-PUB-11852; TRN: US200615%%13
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
AMPLIFIERS
ELECTRON BEAMS
FREE ELECTRON LASERS
GREEN FUNCTION
START-UP
GAIN
Accelerators
ACCPHY
OPTICS
SYNCHRAD
XFEL