Tunable orbital angular momentum in high-harmonic generation

D. Gauthier (), P. Rebernik Ribič, G. Adhikary, A. Camper, C. Chappuis, R. Cucini, L. F. DiMauro, G. Dovillaire, F. Frassetto, R. Géneaux, P. Miotti, L. Poletto, B. Ressel, C. Spezzani, M. Stupar, T. Ruchon and G. De Ninno ()
Additional contact information
D. Gauthier: Elettra-Sincrotrone Trieste
P. Rebernik Ribič: Elettra-Sincrotrone Trieste
G. Adhikary: Laboratory of Quantum Optics, University of Nova Gorica
A. Camper: The Ohio State University
C. Chappuis: LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay
R. Cucini: Elettra-Sincrotrone Trieste
L. F. DiMauro: The Ohio State University
G. Dovillaire: Imagine Optic
F. Frassetto: Institute of Photonics and Nanotechnologies, CNR-IFN
R. Géneaux: LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay
P. Miotti: Institute of Photonics and Nanotechnologies, CNR-IFN
L. Poletto: Institute of Photonics and Nanotechnologies, CNR-IFN
B. Ressel: Laboratory of Quantum Optics, University of Nova Gorica
C. Spezzani: Laboratoire de Physique des Solides, Université Paris-Sud
M. Stupar: Laboratory of Quantum Optics, University of Nova Gorica
T. Ruchon: LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay
G. De Ninno: Elettra-Sincrotrone Trieste

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract 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.

Date: 2017
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DOI: 10.1038/ncomms14971

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