受激布里渊散射中Stokes光的反Stokes散射与慢光效应

朱永祥; 陆启生

doi:10.3788/OPE.20111902.0487

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受激布里渊散射中Stokes光的反Stokes散射与慢光效应

现代应用光学 | 更新时间：2020-08-12

- 受激布里渊散射中Stokes光的反Stokes散射与慢光效应
- Anti-Stokes scattering of Stokes light and slow light in stimulated Brillouin scattering
- 光学精密工程 2011年19卷第2期页码：487-492
- 作者机构：
  
  1. 西北核技术研究所激光与物质相互作用国家重点实验室,陕西西安,710024
  2. 国防科学技术大学光电科学与工程学院,湖南长沙,410073
- 作者简介：
- 基金信息：
  
  激光与物质相互作用国家重点实验室基金资助项目(No.SKLLIM0903-02)()
- DOI：10.3788/OPE.20111902.0487
  中图分类号： O437.2
- 收稿日期：2010-10-08，
  
  修回日期：2010-10-30，
  
  网络出版日期：2011-02-22，
  
  纸质出版日期：2011-02-22
- 稿件说明：
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朱永祥, 陆启生. 受激布里渊散射中Stokes光的反Stokes散射与慢光效应[J]. 光学精密工程, 2011,19(2): 487-492

ZHU Yong-xiang, Lu Qi-sheng. Anti-Stokes scattering of Stokes light and slow light in stimulated Brillouin scattering[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 487-492
朱永祥, 陆启生. 受激布里渊散射中Stokes光的反Stokes散射与慢光效应[J]. 光学精密工程, 2011,19(2): 487-492 DOI： 10.3788/OPE.20111902.0487.

ZHU Yong-xiang, Lu Qi-sheng. Anti-Stokes scattering of Stokes light and slow light in stimulated Brillouin scattering[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 487-492 DOI： 10.3788/OPE.20111902.0487.

摘要

为研究受激布里渊散射(SBS)慢光效应的物理机制

研究了Stokes光与布里渊声场之间的反Stokes散射

以及它与SBS慢光之间的内在联系。理论上证明了在SBS中除了泵浦光外

Stokes散射光与布里渊声场之间也满足散射条件

可发生反Stokes散射。该散射过程是泵浦光的Stokes散射的逆过程

因此泵浦光和Stokes光在布里渊声场中经历往返式散射。在此物理前提下建立了SBS慢光模型

其中Stokes光经历多次散射而光程变大

从而产生了慢光。模型所给出的Stokes脉冲的慢光延迟量与前人得到的结果吻合

表明SBS中存在Stokes光的反Stokes散射

多次散射导致的光程变大是产生SBS慢光效应的物理根源。

Abstract

In order to investigate the mechanism of slow-light effect via stimulated Brillouin scattering (SBS)

the occurrence of the anti-Stokes scattering of Stokes light and the relationship between the anti-Stokes scattering and the mechanism of slow-light via SBS were researched. It is proved that the Stokes light can also be scattered by Brillouin ultrasounds besides the pump light in SBS. The scattering is anti-Stokes

and is a reversal process of the Stokes scattering of the pump light. Therefore

the pump and Stokes lights in SBS experience a back-and-forth scatterings in Brillouin sound fields. On this premise

a model was presented to depict the slow-light effect

in which the optical distance of Stokes wave was enhanced due to the back-and-forth scatterings and the pulse was slowed down as a result. Experiments show the deduced delaying time for the Stokes pulse given by the model agrees with former results. Which suggest that the Stokes light can be anti-Stokes scattered in Brillouin scattered by Brillouin sound fields and also that the enlarged optical distance due to multiple scatterings would be the origin of light slowing in SBS.

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Keywords

references

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