期刊
OPTICAL MATERIALS EXPRESS
卷 4, 期 11, 页码 2241-2249出版社
OPTICAL SOC AMER
DOI: 10.1364/OME.4.002241
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资金
- French National Research Agency (ANR)
- network CMDO + from the CNRS
Principal thermo-optic coefficients (TOCs), dn(o)/dT and dn(e)/dT, are measured for Yb:CaGdAlO4 crystal, for the first time, to our knowledge. At the wavelength of similar to 1 mu m, they equal -7.6 and -8.6 (x 10(-6) K-1), accordingly. Thermal coefficients of the optical path TCOP) are determined for this crystal for the principal crystal cuts (a-cut and c-cut) and light polarizations (pi or sigma). Thermo-optic dispersion formulas are evaluated for both TOC and TCOP coefficients. Optical power of thermal lens is measured for diode-pumped a-cut Yb:CaGdAlO4; it is also calculated on the basis of measured material parameters. Thermal conductivity of CaGdAlO4 crystal is measured versus Yb concentration. The results indicate that a-cut Yb:CaGdAlO4 can provide really athermal behavior. (C)2014 Optical Society of America
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