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二溴甲烷相干反斯托克斯拉曼光谱的选择激发增强研究
引用本文:张亮,李霞,张诗按,张向韵,邓莉,陈果良,孙真荣,王祖赓. 二溴甲烷相干反斯托克斯拉曼光谱的选择激发增强研究[J]. 量子电子学报, 2007, 24(6): 694-698
作者姓名:张亮  李霞  张诗按  张向韵  邓莉  陈果良  孙真荣  王祖赓
作者单位:华东师范大学教育部光谱学与波谱学重点实验室,华东师范大学物理系,上海,200062
基金项目:国家自然科学基金,国家重点基础研究发展计划(973计划),教育部长江学者创新团队计划,教育部新世纪优秀人才培养计划,教育部高等学校博士学科点专项科研基金,上海市科委资助项目,上海市教委曙光学者计划
摘    要:采用基于遗传算法(Genetic algorithm)的自适应反馈系统,成功实现了二溴甲烷多个拉曼振动模式的选择激发.通过脉冲分析方法(二次谐波频率分辨光谱开关和二次谐波交叉频率分辨光谱开关)(SHG-FROG和SHG-XFROG),在时域和频域上对优化脉冲进行还原和分析,结果表明:空间光学调制器(SLM)将优化脉冲调制成具有负啾啁特性的脉冲串.该选择激发实验的成功实现验证了相干控制自适应系统在研究复杂分子系统方面具有良好的应用前景.

关 键 词:量子光学  选择增强  自适应反馈控制  相干反斯托克斯拉曼光谱
文章编号:1007-5461(2007)06-0694-05
收稿时间:2007-01-15
修稿时间:2007-01-15

Selective enhancement of coherent anti-stokes raman scattering from dibromomethane by adaptive feedback control
ZHANG Liang,LI Xia,ZHANG Shi-an,ZHANG Xiang-yun,DENG Li,CHEN Guo-liang,SUN Zhen-rong,WANG Zu-geng. Selective enhancement of coherent anti-stokes raman scattering from dibromomethane by adaptive feedback control[J]. Chinese Journal of Quantum Electronics, 2007, 24(6): 694-698
Authors:ZHANG Liang  LI Xia  ZHANG Shi-an  ZHANG Xiang-yun  DENG Li  CHEN Guo-liang  SUN Zhen-rong  WANG Zu-geng
Affiliation:Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Ministry of Education, and Department of Physics, East China Normal University, Shanghai 200062, China
Abstract:With adaptive feedback system based on Genetic Algorithm(GA),selective excita- tion of coherent anti-Stokes Raman scattering for dibromomethane was successfully achieved. The optimal pulses were characterized with second harmonic generation frequency-resolved optical gating(SHG-FROG)and displayed as trains of sub-pulses with negative chirp.This experimental demonstration of selective excitation between neighboring levels indicates that coherent control has a great potential in the improvement of sensitivity and is a meaningful method in the complex molecular system.
Keywords:quantum optics  selective enhancement  adaptive feedback control  coherent anti-Stokes Raman scattering
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