Numerical analysis and experimental study of thermal lensing of standard and composite Nd:YVO4 crystal with temperature dependence of thermal conductivity tensor

作者：Ahmadi A^*; Avazpour A^*; Nadgaran H; Mousavi M

来源：Laser Physics, 2018, 28(10): 105002.

DOI：10.1088/1555-6611/aad288

• composite crystal
• diode-pumped laser
• Nd:YVO4
• thermal effect
• thermal lensing
• thermal conductivity tensor

A numerical analysis and experimental study of the temperature distribution and thermal lensing in six types and sizes of standard and composite Nd:YVO4 crystals with consideration of the temperature dependence of the thermal conductivity tensor is presented. In the first step to test the model, numerical results at 1064 nm and 1342 nm laser wavelengths are compared with previous experimental results in the literature. In these cases there was good agreement between them in comparison with constant thermal conductivity. In the second step, a diode end pumped Nd:YVO4 laser is constructed with three types of crystals. Single and double-end diffusion bounded crystals have shown equal efficiencies while standard crystal have lower efficiency. A comparison between theoretical and experimental results is done again and a perfect match between them is observed.

• 出版日期2018-10