Chang Y T, Huang Y P, Su K W, Chen Y F
Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
Opt Express. 2008 Dec 8;16(25):21155-60. doi: 10.1364/oe.16.021155.
The effective focal lengths of thermal lens in diode-end-pumped continuous-wave Nd:YVO(4) lasers for the (4)F(3/2)-->(4)I(11/2) and (4)F(3/2)-->(4)I(13/2) transitions were determined. The experimental results revealed that the thermal lensing effect for the (4)F(3/2)-->(4)I(11/2) transition can be sufficiently improved by employing a single-end diffusion-bonded Nd:YVO(4) crystal replacing a conventional Nd:YVO(4) crystal. However, using a double-end diffusion-bonded Nd:YVO(4) crystal was a great improvement over a single-end diffusion-bonded Nd:YVO(4) crystal for the (4)F(3/2)-->(4)I(13/2) transition with stronger thermal lensing effect.
测定了二极管端面泵浦连续波Nd:YVO₄激光器中热透镜在⁴F₃/₂→⁴I₁₁/₂和⁴F₃/₂→⁴I₁₃/₂跃迁时的有效焦距。实验结果表明，对于⁴F₃/₂→⁴I₁₁/₂跃迁，采用单端扩散键合Nd:YVO₄晶体替代传统Nd:YVO₄晶体，可充分改善热透镜效应。然而，对于热透镜效应更强的⁴F₃/₂→⁴I₁₃/₂跃迁，采用双端扩散键合Nd:YVO₄晶体比单端扩散键合Nd:YVO₄晶体有很大改进。
