Generation of vortex N2+ lasing

被引：15

作者：

Hu, Y. U. E. ^{[1
,2
]}

Ye, Z. H. E. N. G. J. U. N. ^{[1
]}

LI, H. A. N. X. I. A. O. ^{[1
,3
]}

Lu, C. H. E. N. X. U. ^{[1
]}

Chen, F. E., I ^{[1
]}

Wang, J. I. A. W. E. I. ^{[1
]}

Pan, S. H. E. N. G. Z. H. E. ^{[1
]}

Zhang, M. I. N. ^{[1
]}

Gao, J. I. A. N. ^{[1
,4
]}

Wu, J. I. A. N. ^{[1
,4
,5
,6
]}

机构：

[1] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China

[2] East China Normal Univ, Sch Phys & Elect Sci, Shanghai 200241, Peoples R China

[3] Naval Res Inst, Shanghai 200235, Peoples R China

[4] East China Normal Univ, Chongqing Key Lab Precis Opt, Chongqing Inst, Chongqing 401121, Peoples R China

[5] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

[6] CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China

来源：

OPTICA | 2023年 / 10卷 / 06期

关键词：

ORBITAL ANGULAR-MOMENTUM; ATOMIC MEDIA; LASER; IONIZATION;

D O I：

10.1364/OPTICA.489206

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Harnessing structured light is fascinating for its multidisciplinary applications, e.g., in remote driving microrobots, sensing, communications, and ultrahigh resolution imaging. Here, we experimentally demonstrated the generation of a vortex N-2(+) lasing pumped by a wavefront structured near-IR femtosecond pulse with orbital angular momentum. The topological charge of the N-2(+) lasing was measured to be twofold that of the pump beam. Compared to the case with a pump beam of a plane wavefront, the N-2(+) lasing generation efficiency is much higher for the vortex pump beam at high pumping energy, which has a higher clamping intensity by reducing the on-axis plasma density. Our results herald a march toward remote structured N-2(+) lasing. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：682 / 687

页数：6

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