Spectroscopic and laser properties of Er^(3+),Pr^(3+)co-doped LiYF_(4)crystal  

作　　者：Zhengda Sun Feifei Wang Haiping Xia Hongkun Nie Kejian Yang Ruihua Wang Jingliang He Baitao Zhang 孙政达;王菲菲;夏海平;聂鸿坤;杨克建;王瑞华;何京良;张百涛(State Key Laboratory of Crystal Materials,Institute of Novel Semiconductors,Shandong University,Jinan 250100,China;Key Laboratory of Crystal Materials,Ningbo University,Ningbo 315211,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China)

机构地区：[1]State Key Laboratory of Crystal Materials,Institute of Novel Semiconductors,Shandong University,Jinan 250100,China [2]Key Laboratory of Crystal Materials,Ningbo University,Ningbo 315211,China [3]Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Optics Letters》2021年第8期28-31,共4页中国光学快报（英文版）

基　　金：supported by the National Research Foundation of China(No.61975095);the Young Scholars Program of Shandong University(No.2017WLJH48);the Youth Cross Innovation Group of Shandong University(No.2020QNQT);the Department of Science and Technology of Shandong Province(No.2019JZZY020206);the Natural Science Foundation of Ningbo(No.202003N4099);the Shenzhen Science and Technology Research and Development Funds(No.JCYJ20180305163932273)。

摘　　要：In this paper,the absorption and fluorescence spectra of Er^(3+),Pr^(3+)co-doped LiYF_(4)(Er,Pr:YLF)crystal were measured and analyzed.The Pr^(3+)co-doping was proved to effectively enhance the Er^(3+)∶^(4)I_(11/2)→^(4)I_(13/2)mid-infrared transition at the 2.7μm with 74.1%energy transfer efficiency from Er^(3+)∶^(4)I_(13/2)to Pr^(3+)∶^(3)F_(4).By using the Judd–Ofelt theory,the stimulated emission cross section was calculated to be 1.834×10^(-20)cm^(2)at 2685 nm and 1.359×10^(-20)cm^(2)at 2804.6 nm.Moreover,a diode-end-pumped Er,Pr:YLF laser operating at 2659 nm was realized for the first time,to the best of our knowledge.The maximum output power was determined to be 258 m W with a slope efficiency of 7.4%,and the corresponding beam quality factors m^(2)_x=1.29 and m^(2)_(y)=1.25.Our results suggest that Er,Pr:YLF should be a promising material for 2.7μm laser generation.

关 键 词：mid-infrared lasers laser materials solid-state lasers 

分 类 号：O734[理学—晶体学] TN248[电子电信—物理电子学]