Temporal behavior of air lasing by molecular nitrogen ions

被引：10

作者：

Ivanov, N. G. ^{[1
]}

Zyatikov, I. A. ^{[1
]}

Losev, V. F. ^{[1
]}

Prokop'ev, V. E. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Current Elect, Siberian Branch, 2-3 Akad Sky Ave, Tomsk 634055, Russia

来源：

OPTICS COMMUNICATIONS | 2020年 / 456卷

基金：

俄罗斯基础研究基金会;

关键词：

Laser plasma; Lasing; Femtosecond duration; Spectrum; Molecular ions; GENERATION;

D O I：

10.1016/j.optcom.2019.124573

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The experimental results of studying the temporal and spectral characteristics of air lasing of a first negative system of molecular nitrogen ions in laser plasma are presented here. Pumping was carried out by femtosecond laser pulse with a wavelength of 950 nm. By using streak camera, the pulse duration of lasing at lambda = 428 nm (1.15 ps, FWHM) was measured. It was close to transform-limited (1 ps). It is shown that there is a delay (5.6 ps) of lasing pulse maximum with respect to the pumping. Lasing has higher directionality and shorter duration compared with spontaneous emission.

引用

页数：3

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