Table 2: Parameters used in FEA calculations for crystals studied in this work.

Nd:YAGNd:KGWYb:YAG

Thermal conductivity W/mm°K
-component0.01032.8 × 10−30.014
-component0.01032.2 × 10−30.014
-component0.01033.5 × 10−30.014
Coefficient of thermal expansion 1/°K
-component4.0 × 10−64.0 × 10−37 × 10−6
-component4.0 × 10−63.5 × 10−37 × 10−6
-component4.0 × 10−68.6 × 10−37 × 10−6
Refractive index1.8232.0331.82
Temperature dependence of refractive index 1/°K9.86 × 10−64.0 × 10−79 × 10−6
Absorption coefficient (parallel polarization )0.353.50.3
Absorption coefficient (perpendicular polarization )0.353.50.3
Heat efficiency factor0.30.30.11
Pump efficiency0.80.81
Stimulated emission cross section (mm2)3.8 × 10−17
Spontaneous lifetime (µs)230100950
Pump laser spot size (µm)300300300