Direct generation of 3.17 mJ green pulses in a cavity-dumped Ho^(3+)-doped fiber laser at 543 nm  

作　　者：TIANRAN LI ZIYU WANG JINHAI ZOU JINFEN HONG QIUJUN RUAN HANG WANG ZHIPENG DONG ZHENGQIAN LUO 

机构地区：[1]Fujian Key Laboratory of Ultrafast Laser Technology and Applications,Xiamen University,Xiamen 361005,China [2]Department of Electronic Engineering,Xiamen University,Xiamen 361005,China [3]Shenzhen Research Institute of Xiamen University,Shenzhen 518129,China [4]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM),Xiamen 361005,China

出　　处：《Photonics Research》2023年第3期413-419,共7页光子学研究（英文版）

基　　金：National Science Funds for Excellent Young Scholars(62022069);Shenzhen Science and Technology Projects(JCYJ20210324115813037);National Natural Science Foundation of China(62105272);Technology Development Program from Huawei Technologies Co.,Ltd.;Fundamental Research Funds for the Central Universities(20720200068)。

摘　　要：High-energy pulsed lasers in the green spectral region are of tremendous interest for applications in space laser ranging,underwater detection,precise processing,and scientific research.Semiconductor pulsed lasers currently are difficult to access to the so-called“green gap,”and high-energy green pulsed lasers still heavily rely on the nonlinear frequency conversion of near-IR lasers,precluding compact and low-cost green laser systems.Here,we address this challenge by demonstrating,for the first time to the best of our knowledge,millijoule-level green pulses generated directly from a fiber laser.The green pulsed fiber laser consists of a 450 nm pump laser diode,a Ho^(3+)-doped ZBLAN fiber,and a cavity-dumping module based on a visible wavelength acousto-optic modulator.Stable pulse operation in the cavity-dumping regime at 543 nm is observed with a tunable repetition rate in a large range of 100 Hz–3 MHz and a pulse duration of 72–116 ns.The maximum pulse energy of 3.17 mJ at 100 Hz is successfully achieved,which is three orders of magnitude higher than those of the rare-earth-doped fiber green lasers previously reported.This work provides a model for compact,high-efficiency,and high-energy visible fiber pulsed lasers.

关 键 词：fiber laser PUMP 

分 类 号：TN248[电子电信—物理电子学]