Temperature dependent absorption and emission spectra of Tm:CaF2

被引：7

作者：

Reiter, Juergen ^{[1
,2
]}

Koerner, Joerg ^{[1
,2
]}

Pejchal, Jan ^{[3
]}

Yoshikawa, Akira ^{[4
]}

Hein, Joachim ^{[1
,2
]}

Kaluza, Malte C. ^{[1
,2
]}

机构：

[1] Friedrich Schiller Univ, Inst Opt & Quantum Elect, Max Wien Pl 1, D-07743 Jena, Germany

[2] Helmholz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

[3] Czech Acad Sci, Inst Phys, Cukrovarnicka 10, Prague 16200 6, Czech Republic

[4] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

来源：

OPTICAL MATERIALS EXPRESS | 2020年 / 10卷 / 09期

关键词：

EXCITED TM-3+ IONS; LASER OPERATION; DOPED CAF2; CRYSTALS; TM3+; GROWTH; MODEL;

D O I：

10.1364/OME.393890

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present Emission and absorption cross sections of thulium doped calcium fluoride (Tm:CaF2) in the visible to short wave infrared (SWIR) wavelength range for temperatures between 80 K and 300 K. For spectral regions of high and low absorption the McCumber relation and the Fuchtbauer-Ladenburg equation have been used to give reliable results. Furthermore, an estimation for the cross relaxation efficiency is derived from the emission spectra as a function of doping concentration and temperature. In addition, nearly re-absorption-free fluorescence lifetimes for various doping concentrations were studied. It was found that a double exponential fit model is better suited than a migration model to represent the fluorescence decay curves. The measurement results are interpreted in the light of the application of Tm:CaF2 as an efficient active medium in high-energy class diode-pumped solid state lasers. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：2142 / 2158

页数：17

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