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
收藏
页码：35305 / 35312
页数：8
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