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flat-top waveform in time domain

Laser and Particle Beams (1)

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Generation of flat-top waveform in the time domain based on stimulated Brillouin scattering using medium with short phonon lifetime
W.L.J. Hasi, S. Gong, Z.W. Lu, D.Y. Lin, W.M. He, R.Q. Fan
Journal:

Laser and Particle Beams / Volume 26 / Issue 4 / December 2008

Published online by Cambridge University Press:

18 September 2008, pp. 511-516
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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.