| 基于超连续光谱激发的时间分辨相干反斯托克斯拉曼散射方法与实验研究 |
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| 引用本文： | 于凌尧,尹君,万辉,刘星,屈军乐,牛憨笨,林子扬. 基于超连续光谱激发的时间分辨相干反斯托克斯拉曼散射方法与实验研究[J]. 物理学报, 2010, 59(8): 5406-5411 |
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| 作者姓名： | 于凌尧 尹君 万辉 刘星 屈军乐 牛憨笨 林子扬 |
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| 作者单位： | (1)深圳大学光电工程学院,光电子器件与系统(教育部/广东省)重点实验室,深圳 518060; (2)深圳大学光电工程学院,光电子器件与系统(教育部/广东省)重点实验室,深圳 518060; 华中科技大学光电子科学与工程学院,武汉 430074 |
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| 基金项目： | 国家自然科学基金(批准号:60627003),广东省高等学校科技创新团队项目(批准号:06CXTD009),教育部高等学校博士学科点专项基金(批准号:2007059000),深圳市非共识技术创新项目计划(批准号:FG200805260251A)资助的课题. |
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| 摘 要： | 采用钛宝石飞秒激光器输出的一部分光抽运光子晶体光纤以产生超连续光谱,作为抽运光和斯托克斯光,另一部分飞秒激光作为探测光,并结合时间延迟方法,建立超连续光谱激发时间分辨相干反斯托克斯拉曼散射(CARS)实验系统,测试了具有较宽拉曼光谱的二甲基亚砜样品.实验结果表明,所建立的实验系统能有效抑制非共振背景噪声,并且通过一次测量,即可获得二甲基亚砜在690—3200cm-1范围内的CARS光谱信息,获得的二甲基亚砜CARS光谱范围达到2500cm-1.同时给出了所采用的光子晶体光纤光谱展宽的实验结果.
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| 关 键 词： | 相干反斯托克斯拉曼散射 超连续光谱 光子晶体光纤 时间分辨 |
Study on the method and experiment of time-resolved coherent anti-Stokes Raman scattering using supercontinuum excitation |
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| Yu Ling-Yao,Yin Jun,Wan Hui,Liu Xing,Qu Jun-Le,Niu Han-Ben,Lin Zi-Yang. Study on the method and experiment of time-resolved coherent anti-Stokes Raman scattering using supercontinuum excitation[J]. Acta Physica Sinica, 2010, 59(8): 5406-5411 |
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| Authors: | Yu Ling-Yao Yin Jun Wan Hui Liu Xing Qu Jun-Le Niu Han-Ben Lin Zi-Yang |
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| Affiliation: | Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; College of Optoelectronic Science and Engineering, Huazhong Universit;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China |
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| Abstract: | In this paper, we present the development and experimental results of a time-resolved coherent anti-Stokes Raman scattering (CARS) experiment setup that is based on supercontinuum excitation and precise time-delay control. The output of a Ti-sapphire femtosecond laser is divided into two parts. One part is used to pump a photonic crystal fiber (PCF) to generate supercontinuum spectrum which is used as pump and stokes beams. The other part of the femtosecond laser is used as the probe light. Dimethyl sulfoxid, a sample with broad range of Raman spectrum was tested. Experimental results show that this system can inhibit the non-resonant background noise effectively and obtain CARS spectrum of dimethyl sulfoxide in the frequency range of 690—3200 cm-1 in one measurement, which means that spectrum range of the acquired CARS spectrum of dimethyl sulfoxide is 2500 cm-1. We also present experimental results of supercontinuum generation using a PCF. |
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| Keywords: | coherent anti-Stokes Raman scattering supercontinuum spectrum photonic crystal fiber time-resolved |
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