Plasma Generation in Air by Intense Laser Pulses with Various Pulse Durations
QIN Yuan-dong, YANG Hong, WANG Shu-feng, ZHU Chang-jun, GONG Qi-huang
Department of Physics, Mesoscopic Physics Laboratory, Peking University, Beijing 100871
Plasma Generation in Air by Intense Laser Pulses with Various Pulse Durations
QIN Yuan-dong;YANG Hong;WANG Shu-feng;ZHU Chang-jun;GONG Qi-huang
Department of Physics, Mesoscopic Physics Laboratory, Peking University, Beijing 100871
关键词 ：
52.50.Jm ,
42.65.Re ,
33.80.Rv
Abstract ： We have studied the plasma generation through collecting the charged particles produced in laser-induced break-down in atmospheric air. This breakdovn is produced by ultrashort laser pulses with various durations ranging from 200fs to 2ps at a fixed pulse energy of 8mJ. We found that the plasma yield increases first with the increment of pulse duration and then reaches a plateau at a duration longer than 500fs. The generated plasma temperature is estimated to be higher than 5x 105 K .
Key words ：
52.50.Jm
42.65.Re
33.80.Rv
出版日期: 1999-08-01
:
52.50.Jm
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
42.65.Re
(Ultrafast processes; optical pulse generation and pulse compression)
33.80.Rv
(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
引用本文:
QIN Yuan-dong;YANG Hong;WANG Shu-feng;ZHU Chang-jun;GONG Qi-huang. Plasma Generation in Air by Intense Laser Pulses with Various Pulse Durations[J]. 中国物理快报, 1999, 16(8): 580-582.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1999/V16/I8/580
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1999, Vol. 16 
