Materials processing with a tightly focused femtosecond laser vortex pulse

被引：181

作者：

Hnatovsky, Cyril ^{[1
]}

Shvedov, Vladlen G. ^{[1
,2
]}

Krolikowski, Wieslaw ^{[1
]}

Rode, Andrei V. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Laser Phys Ctr, Canberra, ACT 0200, Australia

[2] Taurida Natl Univ, Dept Phys, UA-95007 Simferopol, Crimea, Ukraine

来源：

OPTICS LETTERS | 2010年 / 35卷 / 20期

基金：

英国医学研究理事会; 澳大利亚研究理事会;

关键词：

D O I：

10.1364/OL.35.003417

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter we present the first (to our knowledge) demonstration of material modification using tightly focused single femtosecond laser vortex pulses. Double-charge femtosecond vortices were synthesized with a polarization-singularity beam converter based on light propagation in a uniaxial anisotropic medium and then focused using moderate-and high-NA optics (viz., NA = 0.45 and 0.9) to ablate fused silica and soda-lime glass. By controlling the pulse energy, we consistently machine micrometer-size ring-shaped structures with <100 nm uniform groove thickness. (C) 2010 Optical Society of America

引用

页码：3417 / 3419

页数：3

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