Selective oscillation of radially and azimuthally polarized laser beam induced by thermal birefringence and lensing

被引：35
|
作者：
Ito, Akihiko [1 ]
Kozawa, Yuichi [1 ]
Sato, Shunichi [1 ,2 ]
机构：
[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Global Centers Excellence COE Program, CREST, Japan Sci & Technol Agcy, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2009年 / 26卷 / 04期
基金：
日本学术振兴会;
关键词：
GENERATION; MODES;
D O I：
10.1364/JOSAB.26.000708
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate the selective oscillation of radially and azimuthally polarized laser beams induced by thermal birefringence and thermal lensing of a side-pumped Nd:YAG rod. By changing the cavity length, a single transverse mode operation with radial or azimuthal polarization is achieved without the help of any additional optical component. The beam quality factors (M-2) of 2.1 and 2.3 for radially and azimuthally polarized beams are obtained, respectively, with the output power of tens of watts. The polarization selectivity is discussed in terms of the stability diagram of a flat-flat mirror cavity with an Nd:YAG rod of which thermal birefringence and the thermal lensing effect are experimentally obtained and taken into account. (C) 2009 Optical Society of America
引用
收藏
页码：708 / 712
页数：5
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