Sub-3-cycle vortex pulses of tunable topological charge

被引：25

作者：

Bock, Martin ^{[1
]}

Brunne, Jens ^{[2
]}

Treffer, Alexander ^{[1
]}

Koenig, Stefan ^{[1
]}

Wallrabe, Ulrike ^{[2
]}

Grunwald, Ruediger ^{[1
]}

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

[2] Univ Freiburg IMTEK, Dept Microsyst Engn, Lab Microactuators, D-79110 Freiburg, Germany

来源：

OPTICS LETTERS | 2013年 / 38卷 / 18期

关键词：

ANGULAR-MOMENTUM; GENERATION;

D O I：

10.1364/OL.38.003642

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Novel types of reflective spiral micro-electro-mechanical systems were used to generate few-cycle vortex pulses of variable topological charge from a Ti:sapphire laser oscillator. The phase profile of these components was controlled by varying the temperature. The temporal properties of the pulses were characterized with spatially resolved nonlinear autocorrelation. The beam structure resembles a slightly distorted Laguerre-Gaussian distribution. The different topological charges were indicated by detecting Poynting-vector maps with a programmable Shack-Hartmann sensor of enhanced angular sensitivity. (C) 2013 Optical Society of America

引用

页码：3642 / 3645

页数：4

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