Direct generation of watt-level yellow Dy^(3+)-doped fiber laser  

作　　者：Jinhai Zou Tianran Li Yanbo Dou Jin Li Nan Chen Yikun Bu Zhengqian Luo 

机构地区：[1]Department of Electronic Engineering,Xiamen University,Xiamen 361005,China

出　　处：《Photonics Research》2021年第4期446-451,共6页光子学研究（英文版）

基　　金：Equipment Pre-research Project of Equipment Development Department of Central Military Commission(61404140112);National Natural Science Foundation of China(91750115);National Outstanding Youth Science Fund Project of National Natural Science Foundation of China(62022069).

摘　　要：Yellow lasers(∼565–590 nm)are of tremendous interest in biomedicine,astronomy,spectroscopy,and display technology.So far,yellow lasers still have relied heavily on nonlinear frequency conversion of near-infrared lasers,precluding compact and low-cost yellow laser systems.Here,we address the challenge through demonstrating,for the first time,to the best of our knowledge,watt-level high-power yellow laser generation directly from a compact fiber laser.The yellow fiber laser simply consists of a Dy^(3+)-doped ZBLAN fiber as gain medium,a fiber end-facet mirror with high reflectivity at yellow and a 450-nm diode laser as the pump source.We comprehensively investigated the dependence of the yellow laser performance on the output coupler reflectivity and the gain fiber length and demonstrated that the yellow fiber laser with an output coupler reflectivity of 4% and a gain fiber length of∼1.8 m yields a maximum efficiency of 33.6%.A maximum output power of 1.12 W at 575 nm was achieved at a pump power of 4.20 W.This work demonstrated the power scaling of yellow Dy^(3+)-doped ZBLAN fiber lasers,showing their promise for applications in ophthalmology,astronomical exploration,and high-resolution spectroscopy.

关 键 词：fiber laser PUMP 

分 类 号：TN248[电子电信—物理电子学]