| 电光双折射扫描滤波法提高啁啾脉冲对比度 |
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| 引用本文： | 曾曙光,王向林,张彬,王屹山,孙年春,王飞.电光双折射扫描滤波法提高啁啾脉冲对比度[J].强激光与粒子束,2013,25(1):47-51. |
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| 作者姓名： | 曾曙光 王向林 张彬 王屹山 孙年春 王飞 |
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| 作者单位： | 1.三峡大学 理学院 新能源研究院, 湖北 宜昌 443002; |
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| 基金项目： | 国家自然科学基金项目(11104163)；三峡大学优秀人才科研启动基金项目(KJ2011B066) |
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| 摘 要： | 提出了一种通过扫描滤波来提高啁啾脉冲对比度的方法，并分析了该方法的原理。与传统的非线性滤波技术不同，扫描滤波方法消除预脉冲时，选通原理是基于光的频率而不是强度。以电光双折射扫描滤波器为例，说明了扫描滤波法的具体应用。通过数值模拟及实验研究，发现电光双折射扫描滤波法可以有效地消除主脉冲以前几百ps的预脉冲，并且主脉冲同时还能保证较高的透过率。
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| 关 键 词： | 扫描滤波 对比度 啁啾脉冲 预脉冲 电光效应 |
| 收稿时间： | 2012/1/5 |
Improvement of chirped pulse contrast using electro-optic birefringence scanning filter method |
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| Zeng Shuguang,Wang Xianglin,Zhang Bin,Wang Yishan,Sun Nianchun,Wang Fei.Improvement of chirped pulse contrast using electro-optic birefringence scanning filter method[J].High Power Laser and Particle Beams,2013,25(1):47-51. |
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| Authors: | Zeng Shuguang Wang Xianglin Zhang Bin Wang Yishan Sun Nianchun Wang Fei |
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| Institution: | 1.Research Institute for New Energy,College of Science,China Three Gorges University,Yichang 443002,China;2.College of Electronics and Information Engineering,Sichuan University,Chengdu 610064,China;3.Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China |
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| Abstract: | A method using scanning filter to improve the contrast of chirped pulse is proposed, and the principle of this method is analyzed. The scanning filter is compared with the existing pulse-picking technique and nonlinear filtering technique. The scanning filter is a temporal gate that is independent on the intensity of the pulses, but on the instantaneous wavelengths of light. Taking the electro-optic birefringence scanning filter as an example, the application of scanning filter methods is illustrated. Based on numerical simulation and experimental research, it is found that the electro-optic birefringence scanning filter can eliminate a prepulse which is several hundred picoseconds before the main pulse, and the main pulse can maintain a high transmissivity. |
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| Keywords: | scanning filter contrast chirped pulses prepulse electro-optic effect |
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