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基于时间拉伸的飞秒光丝动态测量方法研究 被引量:2

Study on Dynamic Measurement of Femtosecond Filaments Based on Time-Stretch Technology
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摘要 将时间拉伸色散傅里叶变换测量方法应用于飞秒光丝成像研究。通过光谱-空间编码的方式,结合高速单点探测器及示波器,实现了对飞秒光丝瞬态演化过程的一维成像。成像空间分辨率为60μm,刷新速率为54.54 MHz。本文方法避开了CCD对图像刷新率的限制,为研究光丝与物质相互作用动力学提供了新方法。 In this paper,the time-stretch dispersive Fourier transform is applied to imaging femtosecond laser induced filaments.One-dimensional imaging of the transient evolution of a filament is realized by using spectral-spatial coding method combined with a fast photo-detector and an oscilloscope.The spatial resolution is 60μm and the refresh rate reaches 54.54 MHz.The proposed method avoids the limitation of refresh rate caused by CCD and provides a new method for studying the dynamics of the filament-matter interaction.
作者 王小月 王子健 彭博 黄坤 闫明 刘伟伟 曾和平 Wang Xiaoyue;Wang Zijian;Peng Bo;Huang Kun;Yan Ming;Liu Weiwei;Zeng Heping(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;Chongqing Key Laboratory of Precision Optics,Chongqing Institute of East China Normal University,Chongqing 401147,China;Institute of Modern Optics,Nankai University,Tianjin 300071,China)
出处 《激光与光电子学进展》 CSCD 北大核心 2022年第13期431-434,共4页 Laser & Optoelectronics Progress
基金 科技部重点研发计划(2018YFB0504400) 国家自然科学基金(12022411,61875243)。
关键词 超快光学 光丝 成像 傅里叶变换 飞秒激光 ultrafast optics filamentation imaging Fourier transforms femtosecond laser
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