Single higher-order transverse mode operation of a radially polarized Nd:YAG laser using an annularly reflectivity-modulated photonic crystal coupler |
| |
Authors: | Kozawa Yuichi Sato Shunichi |
| |
Institution: | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan. kozawa@tagen.tohoku.ac.jp |
| |
Abstract: | We demonstrate single higher-order transverse mode operation of a radially polarized Nd:YAG laser by using a polarization-selective and reflectivity-modulated output coupler. A narrow annular region with low reflectivity fabricated in a photonic crystal mirror behaves so as to select a higher-order transverse mode of a cylindrically symmetric laser beam. A double-ring-shaped radially polarized TM(02) mode beam is stably generated. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |