Power amplification for 1.6 μm high-order vortex modes

被引：1

作者：

Hai, Lan ^{[1
,2
,3
]}

Zhang, Zhichao ^{[1
,2
,3
]}

Li, Lang ^{[1
,2
,3
]}

Wang, Kaixin ^{[1
,2
,3
]}

Zhang, Xu ^{[1
,2
,3
]}

Yu, Yang ^{[1
,2
,3
]}

Gao, Chunqing ^{[1
,2
,3
]}

Fu, Shiyao ^{[1
,2
,3
]}

机构：

[1] Beijing Inst Technol, Sch Opt & Photon, Beijing 100081, Peoples R China

[2] Minist Ind & Informat Technol, Key Lab Informat Photon Technol, Beijing 100081, Peoples R China

[3] Minist Educ, Key Lab Photoelect Imaging Technol & Syst, Beijing 100081, Peoples R China

来源：

OPTICS EXPRESS | 2023年 / 31卷 / 21期

基金：

中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; OPTICAL VORTEX; DIRECT GENERATION; YAG LASER; BEAM;

D O I：

10.1364/OE.504086

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

1.6 pm high-order vortex modes carrying orbital angular momentums (OAMs) play significant roles in long-range Doppler lidars and other remote sensing. Amplification of 1.6 pm high-order vortex modes is an important way to provide high-power laser sources for such lidars and also enable the weak echo signal to be amplified so that it can be analyzed. In this work, we propose a four-pass Er:YAG vortex master-oscillator-power-amplification (MOPA) system to amplify 1.6 pm high-order vortex modes. In the proof-of-concept experiments, 1.6 pm single OAM mode (l = 3) is amplified successfully and the gain ranging from 1.88 to 2.36 is achieved. Multiplexed OAM mode (l=+/- 3) is also amplified with favorable results. This work addresses the issue as the low gain of Er:YAG vortex MOPA, which provides a feasible path for 1.6 pm high-order vortex modes amplification.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：35305 / 35312

页数：8

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