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Effect of induced betatron motion on longitudinal wiggler free-electron laser gain

Published online by Cambridge University Press:  22 July 2003

SHAILENDRA COUHAN  and
G. MISHRA
SHAILENDRA COUHAN
Affiliation:
Institute for Synchrotron Radiation, ANKA, Forschungszentrum GmbH, Karlsruhe, Germany
G. MISHRA
Affiliation:
Devi Ahilya University, School of Physics, Indore, India
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Abstract

In this article, we discuss the modifications that occur in the brightness and gain of a longitudinal wiggler-free electron laser with the aid of induced betatron oscillation. Two novel approaches have been discussed to improve the gain of the system. In the first scheme, an auxiliary undulator field with betatron oscillations brings in additional bunching and results in enhanced gain. In the second scheme, an axial magnetic field is tuned to provide additional bunching for gain enhancement.

Keywords

Betatron motionEmission frequencyUndulator radiationWiggler free-electron
Type
Research Article
Information
Laser and Particle Beams , Volume 21 , Issue 1 , January 2003 , pp. 53 - 58
Copyright
2003 Cambridge University Press

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