Nonrelativistic electron bunch train for coherently enhanced terahertz radiation sources

Journal Article · Mon Jan 07 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2828337· OSTI ID:21016271

Yuelin, Li; Kim, Kwang-Je ^[1]

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1. Accelerator Systems Division and Argonne Accelerator Institute, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We propose to generate a train of prebunched electron beams for producing coherently enhanced Smith-Purcell radiation [S. J. Smith and E. M. Purcell, Phys. Rev. 92, 1069 (1953)] in the terahertz wavelength range. In this scheme, a train of picosecond laser pulses is produced to drive a photoemission gun to generate a train of 50 keV electron pulses. The parameters are chosen so that the space-charge effect does not destroy the pulse time structure. Smith-Purcell radiation from the electron pulse train is enhanced due both to the short length of the individual electron bunch and to the repetitive structure of the beam. Example systems producing coherent terahertz power at about 1 mW are described.

• OSTI ID: 21016271
• Journal Information: Applied Physics Letters, Vol. 92, Issue 1; Other Information: DOI: 10.1063/1.2828337; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
43 PARTICLE ACCELERATORS
ELECTRON BEAMS
KEV RANGE 10-100
LASERS
PHOTOEMISSION
RADIATION SOURCES
SPACE CHARGE