Crystal-field engineering of ultrabroadband mid-infrared emission in Co2+- doped nano-chalcogenide glass composites

被引：16

作者：

Lu, Xiaosong ^{[1
]}

Zhang, Runan ^{[1
]}

Zhang, Yindong ^{[1
]}

Zhang, Shaoqian ^{[2
]}

Ren, Jing ^{[1
]}

Strizik, Lukas ^{[3
]}

Wagner, Tomas ^{[3
,4
]}

Farrell, Gerald ^{[5
]}

Wang, Pengfei ^{[1
,6
]}

机构：

[1] Harbin Engn Univ, Key Lab Fiber Integrated Opt, Minist Educ China, Harbin 150001, Heilongjiang, Peoples R China

[2] Chinese Acad Sci, Key Lab Chem Lasers, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

[3] Univ Pardubice, Fac Chem Technol, Dept Gen & Inorgan Chem, Studentska 573, Pardubice 53210, Czech Republic

[4] Univ Pardubice, Ctr Mat & Nanotechnol, Studentska 573, Pardubice 53210, Czech Republic

[5] Dublin Inst Technol, Photon Res Ctr, Kevin St, Dublin 8, Ireland

[6] Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2020年 / 40卷 / 01期

基金：

中国国家自然科学基金; 国家重点研发计划; 黑龙江省自然科学基金;

关键词：

Crystal field engineering; Mid-infrared emission; II-VI crystal; Chalcogenide glass; Co2+; ROOM-TEMPERATURE; LASER PROPERTIES; NANOCRYSTALS;

D O I：

10.1016/j.jeurceramsoc.2019.09.006

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tunable and ultrabroadband mid-infrared (MIR) emissions in the range of 2.5-4.5 pm are firstly reported from Co2+-doped nano-chalcogenide (ChG) glass composites. The composites embedded with a variety of binary (ZnS, CdS, ZnSe) and ternary (ZnCdS, ZnSSe) ChG nanocrystals (NCs) can be readily obtained by a simple onestep thermal annealing method. They are highly transparent in the near- and mid-infrared wavelength region. Low-cost and commercially available Er3+-doped fiber lasers can be used as the excitation source. By crystalfield engineering of the embedded NCs through cation- or anion-substitution, the emission properties of Co2+ including its emission peak wavelength and bandwidth can be tailored in a broad spectral range. The phenomena can be accounted for by crystal-field theory. Such nano-ChG composites, perfectly filling the 3-4 pm spectral gap between the oscillations of Cr(2+ )and Fe2+ doped II-VI ChG crystals, may find important MIR photonic applications (e.g., gas sensing), or can be used directly as an efficient pump source for Fe2+ : II-VI crystals which are suffering from lack of pump sources.

引用

页码：103 / 107

页数：5

共 25 条

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