TY - JOUR
T1 - Space-frequency model of amplified spontaneous emission and super-radiance in free-electron laser operating in the linear and non-linear regimes
AU - Pinhasi, Yosef
AU - Lurie, Yuri
AU - Yahalom, Asher
AU - Abramovich, Amir
N1 - Funding Information:
The research was supported in part by the Israel Science Foundation and Ministry of Science. The research of the second author (Yu. L.) was also supported in part by the Center of Scientific Absorption of the Ministry of Absorption, Israel.
PY - 2002/5/1
Y1 - 2002/5/1
N2 - A three-dimensional, space-frequency model for the excitation of electromagnetic radiation in a free-electron laser is presented. The approach is applied in a numerical particle code WB3D simulating the interaction of a free-electron laser operating in the linear and non-linear regimes. Solution of the electromagnetic excitation equations in the frequency domain inherently takes into account dispersive effects arising from the cavity and the gain medium. Moreover, it facilitates the consideration of statistical features of the electron beam and the excited radiation necessary for the study of spontaneous emission, synchrotron amplified spontaneous emission (SASE), super-radiance and noise. We employ the code to study the statistical and spectral characteristics of the radiation generated in a pulsed beam free-electron laser operating in the millimeter wavelengths. The evolution of the radiation spectrum, excited when a Gaussian-shaped bunch with a random distribution of electrons is passing through the wiggler, was investigated.
AB - A three-dimensional, space-frequency model for the excitation of electromagnetic radiation in a free-electron laser is presented. The approach is applied in a numerical particle code WB3D simulating the interaction of a free-electron laser operating in the linear and non-linear regimes. Solution of the electromagnetic excitation equations in the frequency domain inherently takes into account dispersive effects arising from the cavity and the gain medium. Moreover, it facilitates the consideration of statistical features of the electron beam and the excited radiation necessary for the study of spontaneous emission, synchrotron amplified spontaneous emission (SASE), super-radiance and noise. We employ the code to study the statistical and spectral characteristics of the radiation generated in a pulsed beam free-electron laser operating in the millimeter wavelengths. The evolution of the radiation spectrum, excited when a Gaussian-shaped bunch with a random distribution of electrons is passing through the wiggler, was investigated.
KW - Free electron laser
KW - SASE
KW - Space-frequency 3D model
KW - Spontaneous and super-radiant emission
UR - http://www.scopus.com/inward/record.url?scp=0036567170&partnerID=8YFLogxK
U2 - 10.1016/S0168-9002(02)00371-6
DO - 10.1016/S0168-9002(02)00371-6
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AN - SCOPUS:0036567170
SN - 0168-9002
VL - 483
SP - 510
EP - 515
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
ER -