Chu Shu-Chun, Chen Yun-Ting, Tsai Ko-Fan, Otsuka Kenju
Department of Physics and Advanced Optoelectronic Technology Center, National Cheng Kung University,1 Ta-Hsueh Road, Tainan 701, Taiwan.
Opt Express. 2012 Mar 26;20(7):7128-41. doi: 10.1364/OE.20.007128.
This study reports the first systematic approach to the excitation of all high-order Hermite-Gaussian modes (HGMs) in end-pumped solid-state lasers. This study uses a metal-wire-inserted laser resonator accompanied with the "off axis pumping" approach. This study presents numerical analysis of the excitation of HGMs in end-pumped solid-state lasers and experimentally generated HGM patterns. This study also experimentally demonstrates the generation of an square vortex array laser beams by passing specific high-order HGMs (HGn,n + 1 or HGn + 1,n modes) through a Dove prism-embedded unbalanced Mach-Zehnder interferometer [Optics Express 16, 19934-19949]. The resulting square vortex array laser beams with embedded vortexes aligned in a square array can be applied to multi-spot dark optical traps in the future.
本研究报告了一种用于端面泵浦固态激光器中激发所有高阶厄米-高斯模式（HGMs）的首个系统方法。本研究采用了一种插入金属丝的激光谐振器，并结合“离轴泵浦”方法。本研究给出了端面泵浦固态激光器中HGMs激发的数值分析以及实验生成的HGM模式。本研究还通过使特定的高阶HGMs（HGn,n + 1或HGn + 1,n模式）通过一个嵌入道威棱镜的非平衡马赫-曾德尔干涉仪[《光学快报》16, 19934 - 19949]，实验演示了方形涡旋阵列激光束的产生。所得到的带有排列成方形阵列的嵌入式涡旋的方形涡旋阵列激光束未来可应用于多点暗光学阱。
