摘要
利用光电离模型对强飞秒激光脉冲诱导空气等离子体成丝做了理论解释,对等离子体细丝辐射的声音信号进行了探测,根据等离子体细丝在激光传输方向上不同位置辐射声音脉冲信号的强度不同,得到了等离子体细丝的长度信息。
This paper reports the research on the acoustic emission from air plasma filament induced by an intense femtosecond laser pulse. A photoionization model is employed to explain the physical process as a result of the interaction of the focused 50 fs intense laser pulses in air. We experimentally acquire the information of the plasma filament length through measuring the acoustic emission from plasma at different position of filament.
出处
《激光杂志》
北大核心
2015年第9期37-39,共3页
Laser Journal
基金
湖北教育厅科研计划项目(B2014022)
关键词
飞秒激光脉冲
等离子体细丝
声学测量
femtosecond laser pulse
plasma filament
acoustic measurement
