Generation of doughnut laser beams by use of a liquid-crystal cell with a conversion efficiency near 100%

被引：128

作者：

Ganic, D

Gan, XS

Gu, M

Hain, M

Somalingam, S

Stankovic, S

Tschudi, T

机构：

[1] Swinburne Univ Technol, Sch Biophys Sci & Elect Engn, Ctr Microphoton, Hawthorn, Vic 3122, Australia

[2] Tech Univ Darmstadt, Inst Angew Phys, AG Licht & Teilchenopt, D-64289 Darmstadt, Germany

来源：

OPTICS LETTERS | 2002年 / 27卷 / 15期

关键词：

D O I：

10.1364/OL.27.001351

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel technique for producing a doughnut laser beam by use of a liquid-crystal cell. It is demonstrated that the liquid-crystal cell exhibits an efficiency in energy conversion near 100%. One of the main advantages of this method is its capability of dynamic switching between a Gaussian mode and a doughnut mode of different topological charges. The liquid-crystal cell is also dynamically tunable over the visible and near-infrared wavelength range. These advantages make the device appealing for laser trapping methods used in single-molecule biomechanics and for optical guiding of cold atoms. (C) 2002 Optical Society of America.

引用

页码：1351 / 1353

页数：3

共 18 条

[1] FORCES OF A SINGLE-BEAM GRADIENT LASER TRAP ON A DIELECTRIC SPHERE IN THE RAY OPTICS REGIME [J].