Research of the drive laser for FEL

LI Wei-hua; TANG Jun; CHEN Ya-nan; LI Fu-quan; LI Ming-zhong; LI Ming; YANG Xing-fan

doi:10.3969/j.issn.1001-3806.2009.06.017

In order to achieve high quality and high brightness electron beam,a photocathode injector is used as the electron source in the experimental setup of a free electron laser (FEL).The drive laser system is a master oscillator power amplifier configuration,consisting of a confinuous wave diode-pumped mode-locked oscillator,one double-pass and two single-pass regenerative diode-pumped pulse amplifiers and a four fold frequency conversion part.After adjustment,single micropulse energy of 4μJ with less than 3 percent of jitter at wavelength 266nm was obtained.These micropulses were contained within a macropulse envelope as long as 2μs to 6μs.In the experiments,adopting C2Te photocathode as the photoinjector,more than 40A electron beam was obtained,meeting the requirement of beam current for the FEL.

Research of the drive laser for FEL

1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China;

2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2008-08-05

Accepted Date: 2008-12-03

Available Online: 2009-12-25

Abstract: In order to achieve high quality and high brightness electron beam,a photocathode injector is used as the electron source in the experimental setup of a free electron laser (FEL).The drive laser system is a master oscillator power amplifier configuration,consisting of a confinuous wave diode-pumped mode-locked oscillator,one double-pass and two single-pass regenerative diode-pumped pulse amplifiers and a four fold frequency conversion part.After adjustment,single micropulse energy of 4μJ with less than 3 percent of jitter at wavelength 266nm was obtained.These micropulses were contained within a macropulse envelope as long as 2μs to 6μs.In the experiments,adopting C2Te photocathode as the photoinjector,more than 40A electron beam was obtained,meeting the requirement of beam current for the FEL.

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Reference (8)

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Research of the drive laser for FEL

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References

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