Generation of extreme-ultraviolet beams with time-varying orbital angular momentum
Abstract
Structured light beams can serve as vortex beams carrying optical angular momentum and have been used to enhance optical communications and imaging. Rego et al. generated dynamic vortex pulses by interfering two incident time-delayed vortex beams with different orbital angular momenta through the process of high harmonic generation. A controlled time delay between the pulses allowed the high harmonic extreme-ultraviolet vortex beam to exhibit a time-dependent angular momentum, called self-torque. Such dynamic vortex pulses could potentially be used to manipulate nanostructures and atoms on ultrafast time scales.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 28, 2019
- Source ID
- 10.1126/science.aaw9486
Entities
People
- Allison Liu
- Carlos Hernández-García
- Chen-Ting Liao
- David E Couch
- Emilio Pisanty
- Henry Kapteyn
- Julio San Roman
- Kevin M Dorney
- Laura Rego
- Luis Plaja
- Maciej Lewenstein
- Margaret M. Murnane
- Nathan J. Brooks
- Quynh L Nguyen
Organizations
- Air Force Office of Scientific Research
- Barcelona Institute for Science and Technology
- Barcelona Supercomputing Center
- Catalan Institution for Research and Advanced Studies
- European Research Council
- European Social Fund Plus
- Fundación BBVA
- Fundación Cellex
- Junta of Castile and León
- Ministry of Economy, Industry and Competitiveness
- Ministry of Education, Culture and Sport
- National Science Centre Poland
- National Science Foundation
- United States Department of Energy
- University of Colorado
- University of Salamanca