OPTICAL SPIKES AND SUPERRADIANT PULSE-PROPAGATION IN A FREE-ELECTRON LASER
SCIE
SCOPUS
- Title
- OPTICAL SPIKES AND SUPERRADIANT PULSE-PROPAGATION IN A FREE-ELECTRON LASER
- Authors
- HAHN, SJ; LEE, JK
- Date Issued
- 1993-07-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- With one-dimensional nonlinear pulse propagation equations, we show numerically that the spiking behavior of free-electron lasers can be described by the superradiant pulse evolution. Two distinct dynamical regimes are defined by the characteristic length scales; slippage length (L(s)) and slippage distance (L(syn)) during one synchrotron period. In the superradiant regime (L(syn) > L(s)), the superradiant pulse (FWHM congruent-to 1/2L(Syn)) is generated in the trailing slippage region of the electron pulse. In the spiking regime (L(syn) less-than-or-equal-to L(s)), the continuous pulse modulation (FWHM congruent-to 1/2L(syn)) and the long-wavelength sidebands are observed. To compare with the experimental results, the realistic axial current profile and the shot noise are considered.
- Keywords
- RADIATION; REGIME
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22074
- DOI
- 10.1016/0168-9002(93)90077-U
- ISSN
- 0168-9002
- Article Type
- Article
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, vol. 331, no. 1-3, page. 390 - 394, 1993-07-01
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