| 伴随自聚焦的受激布里渊散射相位共轭研究 |
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| 引用本文： | 黄勇,龚旗煌,杨葭荪.伴随自聚焦的受激布里渊散射相位共轭研究[J].物理学报,1990,39(1):67-75. |
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| 作者姓名： | 黄勇 龚旗煌 杨葭荪 |
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| 作者单位： | 北京大学物理系,北京,100871 |
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| 基金项目： | 国家教育委员会基金资助的课题 |
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| 摘 要： | 在聚焦激发方式下,当不均匀泵浦光场包含一个还发生自聚焦的强分量时,受激布里渊散射仍能产生高质量的共轭波。散射波这时完全发自自聚焦所形成的亮丝区域。共轭比η依赖于强分量和总入射光的强度之比σ,并在0<σ<1间区某处形成一极大值ηmax(=80％)。借助“光纤”集光的细丝模型计算了自聚焦对η(σ)的影响,得到同实验圆满一致的结果。
关键词：
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| 关 键 词： | 自聚焦 SBS 相位轭 |
| 收稿时间： | 1989-02-24 |
OPTICAL PHASE CONJUGATION BY STIMULATED BRILLOU-IN SCATTERING IN THE PRESENCE OF SELF-FOCUSING |
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| HUANG YONG,GONG QI-HUANG and YANG JIA-SUN.OPTICAL PHASE CONJUGATION BY STIMULATED BRILLOU-IN SCATTERING IN THE PRESENCE OF SELF-FOCUSING[J].Acta Physica Sinica,1990,39(1):67-75. |
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| Authors: | HUANG YONG GONG QI-HUANG and YANG JIA-SUN |
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| Abstract: | Phase conjugation with high quality can be obtained by stimulated Brillouin scattering in the focused beams' scheme, even when the in homogeneous pump light contains a self-focusing strong component. The scattered light originates from the selftrapped filament regions. The conjugation fraction η depends on the intensi ty ratio a of the strong component and the total incident light, attaining a maximum ηmax (=80%) at a certain value of σ. By taking in-tc account the effect of self-focusing on η(σ), a fair agreement with experiments is obtained. |
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