Optically tunable hollow Gaussian beams with thin metal films

被引：17

作者：

Gerdova, Irina ^{[1
]}

Zhang, Xinhui ^{[1
]}

Hache, Alain ^{[1
]}

机构：

[1] Univ Moncton, Dept Phys, Moncton, NB E1A 3E9, Canada

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2006年 / 23卷 / 09期

关键词：

D O I：

10.1364/JOSAB.23.001934

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the formation of optically tunable, smooth hollow beams by reflection of a TEM00 Gaussian beam off a metal thin film. Hollow (doughnutlike) beams (HBs) with controllable profiles are created by a phase distortion at the surface. Two regimes of operation are observed: Below a certain power threshold, the HB formation is reversible and optically tunable on a time scale of milliseconds; above that threshold, alterations on the film surface make the effect permanent. Optical control of the HB shape is demonstrated by tuning the power of a second beam. High stability in the radial intensity profile and the possibility of adjusting the spatial distribution and aspect ratios make this technique promising for applications such as atom trapping and manipulation of Bose-Einstein condensates. (c) 2006 Optical Society of America.

引用

页码：1934 / 1937

页数：4

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