Limit-cycle-like oscillation produced by wavelength stabilization feedback in a free-electron laser

A new kind of oscillations caused by wavelength stabilization feedback loop, which was observed in SCA/FEL, is theoretically investigated by using a 1D code. The results of numerical simulations confirm the modulations of the electron energy and FEL power, and demonstrate that the oscillations occur...

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Bibliographic Details
Published inOptics communications Vol. 170; no. 1; pp. 111 - 114
Main Authors Shu, Xiaojian, Ho, Y.K
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.10.1999
Elsevier Science
Subjects
Electromagnetism; electron and ion optics
Exact sciences and technology
Feedback
Free-electron laser
Free-electron lasers
Frequency creep
Fundamental areas of phenomenology (including applications)
Limit-cycle oscillation
Physics
Radiation by moving charges
Superradiance
Frequency creep
42.60.Lh
42.60.Mi
Free-electron laser
Feedback
Superradiance
Limit-cycle oscillation
41.60.Cr
Free electron lasers
Digital simulation
Laser feedback
Theoretical study
Limit cycles
Intracavity
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Summary:A new kind of oscillations caused by wavelength stabilization feedback loop, which was observed in SCA/FEL, is theoretically investigated by using a 1D code. The results of numerical simulations confirm the modulations of the electron energy and FEL power, and demonstrate that the oscillations occur regardless of the value of the cavity length detuning. It is found that the frequency creep mainly caused by superradiance results in this kind of limit-cycle-like oscillations.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(99)00453-8