Generation of vortex beams from lasers with controlled Hermite- And Ince-Gaussian modes

Takayuki Ohtomo, Shu-Chun Chu, Kenju Otsuka

研究成果: Article

31 引文 斯高帕斯(Scopus)

摘要

We report selective excitations of higher-order Hermite-Gaussian and Ince-Gaussian (IG) modes in a laser-diode-pumped microchip solid-state laser and controlled generation of corresponding higher-order and multiple optical vortex beams of different shapes using an astigmatic mode converter (AMC). Simply changing the pump-beam diameter, shape, and lateral off-axis position of the tight pump beam focus on the laser crystal within a microchip semispherical cavity can produce the desired optical vortex beams in a well controlled manner. Pattern changes featuring different IG and HG modes obtained by rotating the AMC are also demonstrated. Numerical simulation shows that the vortex structure is changed by controlled off-axis laser diode pumping, which could lead toward precise optical manipulation of small particles.

原文English
頁(從 - 到)5082-5094
頁數13
期刊Optics Express
16
發行號7
DOIs
出版狀態Published - 2008 三月 31

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

指紋 深入研究「Generation of vortex beams from lasers with controlled Hermite- And Ince-Gaussian modes」主題。共同形成了獨特的指紋。

  • 引用此