Tm^(3+) and Nd^(3+) singly doped LiYF_4 single crystals with 3-5 μm mid-infrared luminescence  

作　　者：李珊珊 汪沛渊 夏海平 彭江涛 唐磊 张约品 江浩川 

机构地区：[1]Key Laboratory of Photoelectronic Materials,Ningbo University [2]Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2014年第2期54-56,共3页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51272109 and 50972061);the Natural Science Foundation of Zhejiang Province(No.R4100364);the Natural Science Foundation of Ningbo City(No.2012A610115);the K.C.Wong Magna Fund in Ningbo University

摘　　要：Mid-infrared（MIR） emissions of 2.4 and 3.5 μm from Tm3＋：LiYF4 single crystals attributed to3H4 →3H5 and3H5 →3F4 transitions as well as MIR emissions of 4.2,4.3,and 4.5 μm from Nd3＋：LiYF4 lasers attributed to4I15/2 →4I13/2,4I13/2 →4I11/2,and4I11/2 →4I9/2 transitions,respectively,are observed.LiYF4 single crystals possess high transmittance of over 85% in the 2.5-6 μm range.The large emission crosssections of Tm-doped crystals at 2.4 μm（1.9×10-20cm2） and Nd-doped crystals at 4.2 μm（0.84×10-20 cm2） as well as the high rare-earth doping concentrations,excellent optical transmission,and chemicalphysical properties of the resultant samples indicate that Nd3＋and Tm3＋singly doped crystals may be promising materials for application in MIR lasers.Mid-infrared（MIR） emissions of 2.4 and 3.5 μm from Tm3＋：LiYF4 single crystals attributed to3H4 →3H5 and3H5 →3F4 transitions as well as MIR emissions of 4.2,4.3,and 4.5 μm from Nd3＋：LiYF4 lasers attributed to4I15/2 →4I13/2,4I13/2 →4I11/2,and4I11/2 →4I9/2 transitions,respectively,are observed.LiYF4 single crystals possess high transmittance of over 85% in the 2.5-6 μm range.The large emission crosssections of Tm-doped crystals at 2.4 μm（1.9×10-20cm2） and Nd-doped crystals at 4.2 μm（0.84×10-20 cm2） as well as the high rare-earth doping concentrations,excellent optical transmission,and chemicalphysical properties of the resultant samples indicate that Nd3＋and Tm3＋singly doped crystals may be promising materials for application in MIR lasers.

关 键 词：and Nd MIR m mid-infrared luminescence singly doped LiYF4 single crystals with 3-5 TM 

分 类 号：TN248[电子电信—物理电子学]