Chinese Physics C > 2000, Vol. 24 > Issue(1): 77-81

Investigation on Increasing the Amplitude of Modulation of the Spontaneous Emission of an Optical Klystron

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

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Abstract：
The ratio between the coherent and incoherent densities of a coherent harmonic generation FEL is proportional to the square of the modulation rate of the spontaneous emission spectrum of its optical klystron. Therefore enhancing the modulation of the spontaneous emission spectrum of an optical klystron is important for coherent harmonic generation. A coherent harmonic generation experiment is under way on the 800MeV electron storage ring at University of Science and Technology of China. A modulation rate of 0.8 of the spontaneous emission spectrum of an optical klystron has been obtained. This paper reports the measurement and enhancement of the modulation rate.

References

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Lacalar J L ESRF News Letter, 1996, 25:6––8 2 Sessler A M. Proc. of CERN Accelerator School on Synchrotron Radiation and Free Electron Lasers, 1990,373–389 3 Elleaume P. Journal De Physique, Colloquy C1, Supplement an n02, Tome 44, 1983, 333–352 4 Vinokurov N A, Skrinsky A N. Preprint INP 77, 59, 19775 Vinokurov N A, Skrinsky A N. Proc. Of 10th Int. Conf. on High Energy Chaded Particle Accelerators,1977, 2:4546 Omega T M. Proc. of CERN Accelerator School on Synchrotron Radiation and Free Electron Lasers, 1990,287–303 7 Coisson R, Martini F D. Phys. Quantum Electron, 1982, 9:9398 Plazeres R et al. Nuclear Instruments and Methods in Physics Research, 1988, A272:68–72

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LIU JinYing, XU HongLiang, DIAO CaoZheng, Jm QiKa and HE DuoHui. Investigation on Increasing the Amplitude of Modulation of the Spontaneous Emission of an Optical Klystron[J]. Chinese Physics C, 2000, 24(1): 77-81.

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Received: 1998-11-11
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Investigation on Increasing the Amplitude of Modulation of the Spontaneous Emission of an Optical Klystron

Corresponding author:LIU JinYing,

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Received Date:1998-11-11
Accepted Date:1900-01-01
Available Online:2000-01-05

Abstract:The ratio between the coherent and incoherent densities of a coherent harmonic generation FEL is proportional to the square of the modulation rate of the spontaneous emission spectrum of its optical klystron. Therefore enhancing the modulation of the spontaneous emission spectrum of an optical klystron is important for coherent harmonic generation. A coherent harmonic generation experiment is under way on the 800MeV electron storage ring at University of Science and Technology of China. A modulation rate of 0.8 of the spontaneous emission spectrum of an optical klystron has been obtained. This paper reports the measurement and enhancement of the modulation rate.