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Generation of flat-top waveform in the time domain based on stimulated Brillouin scattering using medium with short phonon lifetime

Published online by Cambridge University Press:  18 September 2008

W.L.J. Hasi
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
S. Gong
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
Z.W. Lu*
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
D.Y. Lin
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
W.M. He
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
R.Q. Fan
Affiliation:
Institute of Opto-Electronics, Harbin Institute of Technology, Harbin, China
*
Address correspondence and reprint requests to: Zhiwei Lu, Institute of Opto-Electronics, Harbin Institute of TechnologyP.O. Box 309, Harbin 150001, China. E-mail: zw_lu@sohu.com

Abstract

A method of generating flat-top waveform in the time-domain based on stimulated Brillouin scattering (SBS) using medium with short phonon lifetime is proposed. In theory, the transmitted pulse is simulated in the case of several media with different phonon lifetime. In experiment, FC-72 and HT-270, which differ significantly in the phonon lifetime, are exploited in the experiment. Both the theoretical and experimental results indicate that, when choosing medium with short phonon lifetime, the top is almost a platform, while there is a peak in the front and a platform thereafter when choosing medium with long phonon lifetime.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2008

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References

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