Growth and spectral properties of Tm:BaY2F8 crystals with different Tm3+ concentration


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Abstract

Tm3+:BaY2F8 (Tm:BYF) laser crystals with different doping concentrations were successfully grown by Czochralski method. The optimal growth parameters obtained are as follows: the pulling rate is 0.5 mm/h; the rotation speed is 5 rpm; the cooling rate is 10°C/h. Phase composition, absorption spectra, and fluorescence properties of crystals were studied by XRD and spectral methods. XRD analysis indicates that the crystal belongs to monoclinic system with the C2/m space group. The lattice parameters were calculated and the anisotropy of the crystals was studied, confirming that the a axis is the best growth direction. The absorption peaks around 790 nm became larger with increase of Tm3+ concentration. The cross section of 15% Tm:BYF crystal around 791 nm is 9.47 × 10–21 cm2. The 10% Tm:BYF crystal has the strongest emission peak around 1879.6 nm with the FWHM of 79 nm and the emission cross-section of 2.13 × 10–21 cm2, which is favorable for the 1.88 μm laser output.

About the authors

Wang Liu

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Chun Li

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Author for correspondence.
Email: lichun1210@163.com
China, Changchun, 130022

Jialin Xu

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Yao Zhou

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Huishuang Xie

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Meiling Gao

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Ru Yin

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Dongyang Zheng

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Hai Lin

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Jinghe Liu

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Email: zengfm@126.com
China, Changchun, 130022

Fanming Zeng

Engineering Research Center of Optoeletronic Functional Materials, Ministry of Education, School of Materials Science and Engineering

Author for correspondence.
Email: zengfm@126.com
China, Changchun, 130022


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