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| 基于改进的单次自相关测量飞秒激光脉冲的时空特性(英文) | |
| 引用本文： | 邓杨保,邓曙光,熊翠秀,张光富,田野,沈连丰.基于改进的单次自相关测量飞秒激光脉冲的时空特性(英文)[J].东南大学学报,2014(4):411-415. |
| 作者姓名： | 邓杨保 邓曙光 熊翠秀 张光富 田野 沈连丰 |
| 作者单位： | 1. 东南大学移动通信国家重点实验室，南京210096; 湖南城市学院通信与电子工程学院，益阳413000 2. 湖南城市学院通信与电子工程学院,益阳,413000 3. 东南大学移动通信国家重点实验室,南京,210096 |
| 基金项目： | Foundation items： The National Natural Science Foundation of China （ No. 61171081, No. 61471164）, the Natural Science Foundation of Hunan Province （No. 14JJ6043）. |
| 摘 要： | 针对单次自相关方法只能测量一个脉宽的缺点,提出一种改进的单次相关方法测量超短激光脉冲全空域中不同空间位置的时空特性.通过实验测量了钛宝石激光器输出飞秒激光脉冲的时空特性,结果表明飞秒激光脉冲全空域中不同位置的复杂空间特性得以精密测量;不同空间位置的时间脉宽不同,它们服从高斯分布;当飞秒激光脉冲经过二硫化碳非线性介质传输后,随着输入平均功率的增加,同一空间位置的时间脉宽呈现慢慢变窄的趋势.实验结果验证了所提方法可以有效地测量超短激光脉冲全空域中不同空间位置的时空特性. |
| 关 键 词： | 时空特性 改进的单次自相关 飞秒激光脉冲 超快激光技术 |
Measurement of spatiotemporal characteristics of femtosecond laser pulses by a modified single-shot autocorrelation |
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| Deng Yangbao,Deng Shuguang,Xiong Cuixiu,Zhang Guangfu,Tian Ye,Shen Lianfeng.Measurement of spatiotemporal characteristics of femtosecond laser pulses by a modified single-shot autocorrelation[J].Journal of Southeast University(English Edition),2014(4):411-415. | |
| Authors: | Deng Yangbao Deng Shuguang Xiong Cuixiu Zhang Guangfu Tian Ye Shen Lianfeng |
| Institution: | Deng Yangbao, Deng Shuguang, Xiong Cuixiu, Zhang Guangfu, Tian Ye, Shen Lianfeng ( 1 National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China) (2College of Communication and Electronic Engineering, Hunan City University, Yiyang 413000, China) |
| Abstract: | To overcome the shortcomings of the single-shot autocorrelation SSA where only one pulse width is obtained when the SSA is applied to measure the pulse width of ultrashort laser pulses a modified SSA for measuring the spatiotemporal characteristics of ultrashort laser pulses at different spatial positions is proposed. The spatiotemporal characteristics of femtosecond laser pulses output from the Ti sapphire regenerative amplifier system are experimentally measured by the proposed method. It was found that the complex spatial characteristics are measured accurately.The pulse widths at different spatial positions are various which obey the Gaussian distribution.The pulse width at the same spatial position becomes narrow with the increase in input average power when femtosecond laser pulses pass through a carbon disulfide CS2 nonlinear medium.The experimental results verify that the proposed method is valid for measuring the spatiotemporal characteristics of ultrashort laser pulses at different spatial positions. |
| Keywords: | spatiotemporal characteristics modified single-shot autocorrelation femtosecond laser pulses ultrafast laser technology |
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