Experimental studies of optical guiding in a Raman free electron laser

J. W. Dodd; S. P. Chang; S. Y. Cai; A. Bhattacharjee; T. C. Marshall

Experimental studies of optical guiding in a Raman free electron laser

J. W. Dodd, S. P. Chang, S. Y. Cai, A. Bhattacharjee, T. C. Marshall

Research output: Contribution to conference › Paper › peer-review

Abstract

Summary form only given, as follows. Optical guiding manifests itself in the Columbia free-electron laser (λ= 1.8-1.9 mm, j = 1-2 kA/cm² , a_w = 1/3, γ= 2.5) in three experimental tests: the observation of spatial ring-down (mode interference) after electron-beam termination, the effect on sideband location, and enhancement of the filling factor and gain. The experiment uses an overmoded 17-mm-diameter waveguide that contains the 4-mm electron beam. A 2-D code that solves the growth of radiation along the beam, incorporating the electron motion, is used to interpret the data. Measurements validating optical guiding in the Columbia Raman free electron laser are presented, emphasizing the filling-factor effect in the regime of exponential growth where refractive guiding dominates gain guiding. Additional data in operating conditions where the signal growth saturates are also presented.

Original language	English (US)
Pages	118
Number of pages	1
State	Published - 1989
Externally published	Yes
Event	Quantum Electronics and Laser Science Conference - Baltimore, MD, USA Duration: Apr 24 1989 → Apr 28 1989

Other

Other	Quantum Electronics and Laser Science Conference
City	Baltimore, MD, USA
Period	4/24/89 → 4/28/89

All Science Journal Classification (ASJC) codes

General Engineering

Cite this

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title = "Experimental studies of optical guiding in a Raman free electron laser",

abstract = "Summary form only given, as follows. Optical guiding manifests itself in the Columbia free-electron laser (λ= 1.8-1.9 mm, j = 1-2 kA/cm2 , aw = 1/3, γ= 2.5) in three experimental tests: the observation of spatial ring-down (mode interference) after electron-beam termination, the effect on sideband location, and enhancement of the filling factor and gain. The experiment uses an overmoded 17-mm-diameter waveguide that contains the 4-mm electron beam. A 2-D code that solves the growth of radiation along the beam, incorporating the electron motion, is used to interpret the data. Measurements validating optical guiding in the Columbia Raman free electron laser are presented, emphasizing the filling-factor effect in the regime of exponential growth where refractive guiding dominates gain guiding. Additional data in operating conditions where the signal growth saturates are also presented.",

author = "Dodd, {J. W.} and Chang, {S. P.} and Cai, {S. Y.} and A. Bhattacharjee and Marshall, {T. C.}",

year = "1989",

language = "English (US)",

pages = "118",

note = "Quantum Electronics and Laser Science Conference ; Conference date: 24-04-1989 Through 28-04-1989",

}

TY - CONF

T1 - Experimental studies of optical guiding in a Raman free electron laser

AU - Dodd, J. W.

AU - Chang, S. P.

AU - Cai, S. Y.

AU - Bhattacharjee, A.

AU - Marshall, T. C.

PY - 1989

Y1 - 1989

N2 - Summary form only given, as follows. Optical guiding manifests itself in the Columbia free-electron laser (λ= 1.8-1.9 mm, j = 1-2 kA/cm2 , aw = 1/3, γ= 2.5) in three experimental tests: the observation of spatial ring-down (mode interference) after electron-beam termination, the effect on sideband location, and enhancement of the filling factor and gain. The experiment uses an overmoded 17-mm-diameter waveguide that contains the 4-mm electron beam. A 2-D code that solves the growth of radiation along the beam, incorporating the electron motion, is used to interpret the data. Measurements validating optical guiding in the Columbia Raman free electron laser are presented, emphasizing the filling-factor effect in the regime of exponential growth where refractive guiding dominates gain guiding. Additional data in operating conditions where the signal growth saturates are also presented.

AB - Summary form only given, as follows. Optical guiding manifests itself in the Columbia free-electron laser (λ= 1.8-1.9 mm, j = 1-2 kA/cm2 , aw = 1/3, γ= 2.5) in three experimental tests: the observation of spatial ring-down (mode interference) after electron-beam termination, the effect on sideband location, and enhancement of the filling factor and gain. The experiment uses an overmoded 17-mm-diameter waveguide that contains the 4-mm electron beam. A 2-D code that solves the growth of radiation along the beam, incorporating the electron motion, is used to interpret the data. Measurements validating optical guiding in the Columbia Raman free electron laser are presented, emphasizing the filling-factor effect in the regime of exponential growth where refractive guiding dominates gain guiding. Additional data in operating conditions where the signal growth saturates are also presented.

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M3 - Paper

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SP - 118

T2 - Quantum Electronics and Laser Science Conference

Y2 - 24 April 1989 through 28 April 1989

ER -

Experimental studies of optical guiding in a Raman free electron laser

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