Controlling the polarization and vortex charge of attosecond high-harmonic beams via simultaneous spin-orbit momentum conservation

被引：149

作者：

Dorney, Kevin M. ^{[1
,2
]}

Rego, Laura ^{[3
]}

Brooks, Nathan J. ^{[1
,2
]}

San Roman, Julio ^{[3
]}

Liao, Chen-Ting ^{[1
,2
]}

Ellis, Jennifer L. ^{[1
,2
]}

Zusin, Dmitriy ^{[1
,2
]}

Gentry, Christian ^{[1
,2
]}

Nguyen, Quynh L. ^{[1
,2
]}

Shaw, Justin M. ^{[4
]}

Picon, Antonio ^{[3
,5
]}

Plaja, Luis ^{[3
]}

Kapteyn, Henry C. ^{[1
,2
]}

Murnane, Margaret M. ^{[1
,2
]}

Hernandez-Garcia, Carlos ^{[3
]}

机构：

[1] Univ Colorado, Dept Phys, JILA, Boulder, CO 80309 USA

[2] NIST, Boulder, CO USA

[3] Univ Salamanca, Dept Fis Aplicada, Grp Invest Aplicaciones Laser & Foton, Salamanca, Spain

[4] Natl Inst Stand & Technol, Quantum Electromagnet Div, Boulder, CO USA

[5] Univ Autonoma Madrid, Dept Quim, Madrid, Spain

来源：

NATURE PHOTONICS | 2019年 / 13卷 / 02期

基金：

美国国家科学基金会;

关键词：

ANGULAR-MOMENTUM; GENERATION; LIGHT; DYNAMICS;

D O I：

10.1038/s41566-018-0304-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical interactions are governed by both spin and angular momentum conservation laws, which serve as a tool for controlling light-matter interactions or elucidating electron dynamics and structure of complex systems. Here, we uncover a form of simultaneous spin and orbital angular momentum conservation and show, theoretically and experimentally, that this phenomenon allows for unprecedented control over the divergence and polarization of extreme-ultraviolet vortex beams. High harmonics with spin and orbital angular momenta are produced, opening a novel regime of angular momentum conservation that allows for manipulation of the polarization of attosecond pulses-from linear to circular-and for the generation of circularly polarized vortices with tailored orbital angular momentum, including harmonic vortices with the same topological charge as the driving laser beam. Our work paves the way to ultrafast studies of chiral systems using high-harmonic beams with designer spin and orbital angular momentum.

引用

页码：123 / +

页数：9

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