High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water

Wei Gao; Zhi Wei Lu; Wei Ming He; Yong Kang Dong

High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water

Wei Gao^*
, Zhi Wei Lu
, Wei Ming He
, Yong Kang Dong

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Harbin University of Science and Technology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The influences of the delay time, the cell length and the pump energy on the gain amplification of weak Stokes signal of stimulated Brillouin scattering (SBS) in water are investigated theoretically and experimentally. In the experiment a frequency-doubled seed injection Nd:YAG laser with a pulse duration of 7.2 ns was used. Results showed that the pump pulse should lag the Stokes signal pulse by an amount equal to pulse half-width to obtain the maximum gain. Depending on the pump energy the signal below 10^-5 mJ is linearly amplified. By using CS₂ as amplifier medium, a Stokes signal of 1 pJ from water is amplified with high gain (7 × 10⁷) in the regime below the pump's self-SBS threshold.

Original language	English
Pages (from-to)	2248-2252
Number of pages	5
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	57
Issue number	4
State	Published - Apr 2008

Keywords

Brillouin amplifier
Delay time
Pump energy
Signal gain

Cite this

@article{24570c9f9baa45a3831832a1b8f359e5,

title = "High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water",

abstract = "The influences of the delay time, the cell length and the pump energy on the gain amplification of weak Stokes signal of stimulated Brillouin scattering (SBS) in water are investigated theoretically and experimentally. In the experiment a frequency-doubled seed injection Nd:YAG laser with a pulse duration of 7.2 ns was used. Results showed that the pump pulse should lag the Stokes signal pulse by an amount equal to pulse half-width to obtain the maximum gain. Depending on the pump energy the signal below 10-5 mJ is linearly amplified. By using CS2 as amplifier medium, a Stokes signal of 1 pJ from water is amplified with high gain (7 × 107) in the regime below the pump's self-SBS threshold.",

keywords = "Brillouin amplifier, Delay time, Pump energy, Signal gain",

author = "Wei Gao and Lu, \{Zhi Wei\} and He, \{Wei Ming\} and Dong, \{Yong Kang\}",

year = "2008",

month = apr,

language = "英语",

volume = "57",

pages = "2248--2252",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences",

number = "4",

}

TY - JOUR

T1 - High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water

AU - Gao, Wei

AU - Lu, Zhi Wei

AU - He, Wei Ming

AU - Dong, Yong Kang

PY - 2008/4

Y1 - 2008/4

N2 - The influences of the delay time, the cell length and the pump energy on the gain amplification of weak Stokes signal of stimulated Brillouin scattering (SBS) in water are investigated theoretically and experimentally. In the experiment a frequency-doubled seed injection Nd:YAG laser with a pulse duration of 7.2 ns was used. Results showed that the pump pulse should lag the Stokes signal pulse by an amount equal to pulse half-width to obtain the maximum gain. Depending on the pump energy the signal below 10-5 mJ is linearly amplified. By using CS2 as amplifier medium, a Stokes signal of 1 pJ from water is amplified with high gain (7 × 107) in the regime below the pump's self-SBS threshold.

AB - The influences of the delay time, the cell length and the pump energy on the gain amplification of weak Stokes signal of stimulated Brillouin scattering (SBS) in water are investigated theoretically and experimentally. In the experiment a frequency-doubled seed injection Nd:YAG laser with a pulse duration of 7.2 ns was used. Results showed that the pump pulse should lag the Stokes signal pulse by an amount equal to pulse half-width to obtain the maximum gain. Depending on the pump energy the signal below 10-5 mJ is linearly amplified. By using CS2 as amplifier medium, a Stokes signal of 1 pJ from water is amplified with high gain (7 × 107) in the regime below the pump's self-SBS threshold.

KW - Brillouin amplifier

KW - Delay time

KW - Pump energy

KW - Signal gain

UR - https://www.scopus.com/pages/publications/42949133524

M3 - 文章

AN - SCOPUS:42949133524

SN - 1000-3290

VL - 57

SP - 2248

EP - 2252

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 4

ER -

High-gain amplification of weak Stokes signal of stimulated Brillouin scattering in water

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Keywords

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