Tunable orbital angular momentum in high-harmonic generation

被引：196

作者：

Gauthier, D. ^{[1
]}

Ribic, P. Rebernik ^{[1
]}

Adhikary, G. ^{[2
]}

Camper, A. ^{[3
]}

Chappuis, C. ^{[4
]}

Cucini, R. ^{[1
]}

DiMauro, L. F. ^{[3
]}

Dovillaire, G. ^{[5
]}

Frassetto, F. ^{[6
]}

Geneaux, R. ^{[4
]}

Miotti, P. ^{[6
]}

Poletto, L. ^{[6
]}

Ressel, B. ^{[2
]}

Spezzani, C. ^{[7
]}

Stupar, M. ^{[2
]}

Ruchon, T. ^{[4
]}

De Ninno, G. ^{[1
,2
]}

机构：

[1] Elettra Sincrotrone Trieste, Area Sci Pk, I-34149 Trieste, Italy

[2] Univ Nova Gorica, Lab Quantum Opt, Nova Gorica 5001, Slovenia

[3] Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA

[4] Univ Paris Saclay, CEA Saclay, CNRS, CEA,LIDYL, F-91191 Gif Sur Yvette, France

[5] Imagine Optic, F-91400 Orsay, France

[6] CNR IFN, Inst Photon & Nanotechnol, I-35131 Padua, Italy

[7] Univ Paris 11, CNRS, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

关键词：

EXTREME-ULTRAVIOLET; OPTICAL VORTICES; LASER-BEAM; LIGHT; EMISSION; PHOTONS; FIELDS;

D O I：

10.1038/ncomms14971

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Optical vortices are currently one of the most intensively studied topics in optics. These light beams, which carry orbital angular momentum (OAM), have been successfully utilized in the visible and infrared in a wide variety of applications. Moving to shorter wavelengths may open up completely new research directions in the areas of optical physics and material characterization. Here, we report on the generation of extreme-ultraviolet optical vortices with femtosecond duration carrying a controllable amount of OAM. From a basic physics viewpoint, our results help to resolve key questions such as the conservation of angular momentum in highly nonlinear light-matter interactions, and the disentanglement and independent control of the intrinsic and extrinsic components of the photon's angular momentum at short-wavelengths. The methods developed here will allow testing some of the recently proposed concepts such as OAM-induced dichroism, magnetic switching in organic molecules and violation of dipolar selection rules in atoms.

引用

页数：7

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