野外环境下太瓦飞秒激光等离子体通道
特性研究

量子电子学报 ›› 2020, Vol. 37 ›› Issue (5): 513-523.

• “激光大气传输与探测”专辑 • 下一篇

野外环境下太瓦飞秒激光等离子体通道特性研究

滕浩1, 鲁欣1, 沈忠伟1, 陈式友1, 陈荣毅2, 魏文寿2, 魏志义1

1 中国科学院物理研究所, 北京100190; 2 中国气象局乌鲁木齐沙漠气象研究所, 新疆乌鲁木齐830002

收稿日期:2020-06-08 修回日期:2020-07-07 出版日期:2020-09-28 发布日期:2020-09-28
通讯作者: 魏志义:zywei@iphy.ac.cn
作者简介:滕浩( 1972 - ), 四川人, 研究生, 副研究员, 主要从事超短脉冲激光及超快物理方面的研究。E-mail: hteng@iphy.ac.cn
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 11674386, 11434016), National Key R & D Program of China (国家重点研发计划项目, 2018YFB1107201, 2012BAC23B03)

Properties of long plasma-channel generated by TW femtosecond laser in natural environmental air

TENG Hao1, LU Xin1, SHEN Zhongwei1, CHEN Shiyou1, CHEN Rongyi2, WEI Wenshou2, WEI Zhiyi1

1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; 2 Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China

Received:2020-06-08 Revised:2020-07-07 Published:2020-09-28 Online:2020-09-28

摘要/Abstract

摘要： 对太瓦(TW) 飞秒激光在自然大气中传输时产生的超长等离子体通道的物理性质进行了研究。试验结果证实2 TW 飞秒激光在大气中自由传输时实现了2 km 长的等离子体通道, 长距离传输后通道内的等离子体电子密度约为1011 cm􀀀3, 仍然保持良好的导电性。高压放电试验也证实了有等离子体通道存在, 可以将放电电压降低 30%, 说明激光诱导高压放电的有效性。本次试验研究表明长度为公里量级、长寿命大气等离子体通道的实现是可行的, 将为激光引雷、大气监测、人工干预气候等实用化应用扫清技术上的障碍。

关键词: 激光技术, 超短脉冲激光, 等离子体通道, 大气成丝, 激光引雷, 飞秒激光

Abstract: The properties of long plasma-channel generated by terawatt (TW) femtosecond laser propagating in natural environmental air are investigated. It shows that the plasma filamentation with length of 2 km can be achieved when 2 TW femtosecond laser propagates in natural environment, and the electron density is measured to be 1011 cm􀀀3 at different location of filament, which shows the good conductivity of plasma channel even at the end of channel. Moreover, high voltage discharge test also confirms that, compared with the case without plasma channel, the high voltage of discharging can be reduced by 30% when plasma channel exists, which indicates the effectiveness of fs laser induced discharging. This work paves away for generation of several kilometer and long lifetime filamentation in air, laser induced lightning, environmental monitoring, and artificial intervention of climate.

Key words: laser technology, ultrashort pulse laser, plasma channel, filamentation, laser induced lightning; femtosecond laser

中图分类号:

O437.5

滕浩, 鲁欣, 沈忠伟, 陈式友, 陈荣毅, 魏文寿, 魏志义. 野外环境下太瓦飞秒激光等离子体通道特性研究[J]. 量子电子学报, 2020, 37(5): 513-523.

TENG Hao, LU Xin, SHEN Zhongwei, CHEN Shiyou, CHEN Rongyi, WEI Wenshou, WEI Zhiyi. Properties of long plasma-channel generated by TW femtosecond laser in natural environmental air[J]. Chinese Journal of Quantum Electronics, 2020, 37(5): 513-523.

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野外环境下太瓦飞秒激光等离子体通道特性研究

Properties of long plasma-channel generated by TW femtosecond laser in natural environmental air

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野外环境下太瓦飞秒激光等离子体通道 特性研究

Properties of long plasma-channel generated by TW femtosecond laser in natural environmental air

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野外环境下太瓦飞秒激光等离子体通道特性研究