THRESHOLD REDUCTION OF STIMULATED BRILLOUIN SCATTERING BY ENHANCING INITIAL BRILLOUIN ULTRASOUNDS

被引：0
|
作者：
Zhu, Yongxiang [1 ]
Lu, Qisheng [1 ]
Guo, Shaofeng [1 ]
Cheng, Xiang'Ai [1 ]
机构：
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS | 2009年 / 18卷 / 02期
关键词：
Stimulated Brillouin scattering; threshold reduction; Brillouin ultrasounds; microwave; NOISE INITIATION; MICROSCOPY;
D O I：
10.1142/S0218863509004634
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose reducing the threshold of stimulated Brillouin Scattering by enhancing the initial Brillouin ultrasounds, since the high threshold results from the low intensity of the sounds that exist in thermal noises. Theoretical analysis shows that the threshold can be reduced by at least one order through introducing comparatively weak Brillouin ultrasounds. Schemes for enhancing the initial ultrasounds are also proposed, including stimulation by transducers, by electroacoustic media or by direct radiation of microwaves.
引用
收藏
页码：319 / 326
页数：8
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