Femtosecond infrared optical vortex lasers based on optical parametric amplification

被引：8

作者：

Feng, Renyu ^{[1
,2
,3
]}

Qian, Junyu ^{[1
,2
,3
]}

Peng, Yujie ^{[1
,2
]}

Li, Yanyan ^{[1
,2
]}

Li, Wenkai ^{[1
,2
]}

Leng, Yuxin ^{[1
,2
]}

Li, Ruxin ^{[1
,2
,4
]}

机构：

[1] Chinese Acad Sci, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai Inst Opt & Fine Mech SIOM, Shanghai 201800, Peoples R China

[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China

[4] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China

来源：

HIGH POWER LASER SCIENCE AND ENGINEERING | 2022年 / 10卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

infrared lasers; optical vortex; ultrafast lasers; ORBITAL ANGULAR-MOMENTUM; GENERATION; LIGHT; BEAM; WAVE;

D O I：

10.1017/hpl.2022.20

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Infrared femtosecond optical vortices open up many new research fields, such as optical micro-nano manipulation, time-resolved nonlocal spectroscopy in solids, vortex secondary radiation and particle generations. In this article, we demonstrate a femtosecond optical vortex laser system based on a two-stage optical parametric amplifier. In our experiment, 1.45 mu m vortex signal pulses with energy of 190 mu J and 1.8 mu m vortex idler pulses with energy of 158 mu J have been obtained, and the pulse durations are 51 and 48 fs, respectively. Both the energy fluctuations of the signal and idler pulses are less than 0.5% (root mean square), and the spectral fluctuations are less than 1.5% within 1 hour. This type of highly stable femtosecond optical vortex laser has a wide range of applications for vortex strong-field physics.

引用

页数：6

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