Coupling of N2+ rotational states in an air laser from tunnel-ionized nitrogen molecules

被引：38

作者：

Xie, Hongqiang ^{[1
,2
]}

Zeng, Bin ^{[1
]}

Li, Guihua ^{[1
]}

Chu, Wei ^{[1
]}

Zhang, Haisu ^{[1
]}

Jing, Chenrui ^{[1
,2
]}

Yao, Jinping ^{[1
]}

Ni, Jielei ^{[1
]}

Wang, Zhaohui ^{[1
,2
]}

Li, Ziting ^{[1
,2
]}

Cheng, Ya ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 04期

基金：

中国国家自然科学基金;

关键词：

FEMTOSECOND LASER; FILAMENT; PULSES; GENERATION; EMISSION; INTENSE; GAS;

D O I：

10.1103/PhysRevA.90.042504

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on experimental and theoretical investigations of dynamic evolution of individual R-branch laser lines from tunnel-ionized nitrogen molecules based on a pump-probe scheme. Our observation shows that the intensities of the R-branch laser lines exhibit rapid oscillations which can be decomposed into periodic oscillations at different frequencies. The oscillations can be attributed to the coupling between the rotational quantum states mediated either by the probe pulses or by the P-branch laser emission from the molecular ions.

引用

页数：5

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