Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation

A. H. Lumpkin; R. Dejus; J. W. Lewellen; Magnus Berglund; S. Biedron; M. Borland; Y. C. Chae; M. Erdmann; Z. Huang; K. J. Kim; Y. Li; S. V. Milton; E. Moog; D. W. Rule; V. Sajaev; B. X. Yang

doi:10.1103/PhysRevLett.88.234801

Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation

A. H. Lumpkin, R. Dejus, J. W. Lewellen, Magnus Berglund, S. Biedron, M. Borland, Y. C. Chae, M. Erdmann, Z. Huang, K. J. Kim, Y. Li, S. V. Milton, E. Moog, D. W. Rule, V. Sajaev, B. X. Yang

MAX IV Laboratory

Research output: Contribution to journal › Article › peer-review

Abstract

We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.

Original language	English
Pages (from-to)	4-4
Journal	Physical Review Letters
Volume	88
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.88.234801
Publication status	Published - 2002

Subject classification (UKÄ)

Physical Sciences
Natural Sciences

Free keywords

FEL
GAIN
WIGGLER
DIAGNOSTICS
BEAM
AMPLIFIED SPONTANEOUS-EMISSION

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10.1103/PhysRevLett.88.234801

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Lumpkin, A. H., Dejus, R., Lewellen, J. W., Berglund, M., Biedron, S., Borland, M., Chae, Y. C., Erdmann, M., Huang, Z., Kim, K. J., Li, Y., Milton, S. V., Moog, E., Rule, D. W., Sajaev, V., & Yang, B. X. (2002). Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation. Physical Review Letters, 88(23), 4-4. https://doi.org/10.1103/PhysRevLett.88.234801

@article{d8bafd568fcc4355a63a7c6c16998b85,

title = "Evidence for microbunching {"}sidebands{"} in a saturated free-electron laser using coherent optical transition radiation",

abstract = "We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an {"}effective{"} core of the beam being involved in microbunching.",

keywords = "FEL, GAIN, WIGGLER, DIAGNOSTICS, BEAM, AMPLIFIED SPONTANEOUS-EMISSION",

author = "Lumpkin, {A. H.} and R. Dejus and Lewellen, {J. W.} and Magnus Berglund and S. Biedron and M. Borland and Chae, {Y. C.} and M. Erdmann and Z. Huang and Kim, {K. J.} and Y. Li and Milton, {S. V.} and E. Moog and Rule, {D. W.} and V. Sajaev and Yang, {B. X.}",

year = "2002",

doi = "10.1103/PhysRevLett.88.234801",

language = "English",

volume = "88",

pages = "4--4",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "23",

}

Lumpkin, AH, Dejus, R, Lewellen, JW, Berglund, M, Biedron, S, Borland, M, Chae, YC, Erdmann, M, Huang, Z, Kim, KJ, Li, Y, Milton, SV, Moog, E, Rule, DW, Sajaev, V & Yang, BX 2002, 'Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation', Physical Review Letters, vol. 88, no. 23, pp. 4-4. https://doi.org/10.1103/PhysRevLett.88.234801

TY - JOUR

T1 - Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation

AU - Lumpkin, A. H.

AU - Dejus, R.

AU - Lewellen, J. W.

AU - Berglund, Magnus

AU - Biedron, S.

AU - Borland, M.

AU - Chae, Y. C.

AU - Erdmann, M.

AU - Huang, Z.

AU - Kim, K. J.

AU - Li, Y.

AU - Milton, S. V.

AU - Moog, E.

AU - Rule, D. W.

AU - Sajaev, V.

AU - Yang, B. X.

PY - 2002

Y1 - 2002

N2 - We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.

AB - We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.

KW - FEL

KW - GAIN

KW - WIGGLER

KW - DIAGNOSTICS

KW - BEAM

KW - AMPLIFIED SPONTANEOUS-EMISSION

U2 - 10.1103/PhysRevLett.88.234801

DO - 10.1103/PhysRevLett.88.234801

M3 - Article

SN - 1079-7114

VL - 88

SP - 4

EP - 4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

ER -

Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation

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