Driving laser pulse evolution in a hollow channel laser wakefield accelerator
- Ernest Orlando Lawrence Berkeley National Laboratory, University of California Berkeley, Berkeley, California 94720 (United States)
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
An analytic and numerical study of the coupling between a high-intensity laser pulse and a plasma wake is presented, in the context of laser wakefield acceleration in a hollow channel. Laser wavelength reddening and pulse length shortening are qualitatively described using simple scaling laws. One-dimensional self-consistent equations are derived and numerically solved to provide a more detailed description of the laser pulse evolution for the case of propagation in a uniform plasma. These equations are extended to treat the case of laser pulse propagation in a hollow channel. The coupling between the plasma and the laser pulse is calculated using energy conservation. The model obtained provides a simple method for inferring the plasma wake characteristics from measurement of changes in phase and amplitude of the driving laser pulse. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 560612
- Journal Information:
- Physics of Plasmas, Vol. 4, Issue 9; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
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