Thermo-optic characterization of Yb:YAl3(BO3)4 laser crystal

被引：0
|
作者：
P. A. Loiko
V. V. Filippov
N. V. Kuleshov
N. I. Leonyuk
V. V. Maltsev
K. V. Yumashev
机构：
[1] Belarusian National Technical University,Center for Optical Materials and Technologies
[2] National Academy of Sciences of Belarus,Stepanov Institute of Physics
[3] Moscow State University,Faculty of Geology
来源：
Applied Physics B | 2014年 / 117卷
关键词：
Thermal Lens; Uniaxial Crystal; Aluminum Borate; Principal Refractive Index; Sellmeier Formula;
D O I：
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中图分类号：
学科分类号：
摘要：
Principal thermo-optic coefficients, dno/dT and dne/dT, are determined for 7at.%Yb: YAl3(BO3)4 crystal by the use of a minimum deviation method, modified for anisotropic, optically uniaxial crystals. Direct measurements are accompanied by modeling of the dn/dT versus light wavelength dependence, yielding analytic thermo-optic dispersion formulae for the spectral range of 0.4–1.6 μm. At the wavelength of 1030 nm, dno/dT = 3.5 and dne/dT = 6.0 [10−6 K−1]. Sellmeier formulas are evaluated for the principal refractive indices no and ne. The thermal coefficients of the optical path are determined for the principal crystal cuts of Yb:YAl3(BO3)4, a-cut and c-cut, and light polarizations, π or σ. Finally, thermal lens parameters are evaluated for Yb:YAl3(BO3)4 crystals on the basis of measured material parameters.
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页码：577 / 583
页数：6
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