2019/06/12 by Davıd L. Andrews, Andrews, David L., Henryk Haniewicz +3
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Laser Design and Applications #Laser-Matter Interactions and Applications #Optics (physics.optics)
paper · pdf · doi:10.48550/arxiv.1906.04978
openalex publication_date 2019/06/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
At levels of laser intensity below threshold for multiphoton ionization, the parametric generation of optical harmonics in gases and other isotropic media is subject to selection rules with origins in angular momentum conservation. The recently developed optics of vector polarization modes provides an unprecedented opportunity to exploit these principles in the production of high harmonic beams with distinctive forms of transverse intensity profile, comprising discrete sub-wavelength filaments in crown-like arrays. A detailed analysis of the fundamental electrodynamics elicits the mechanism, and delivers results illustrating the transverse structures and spatial dimensions of harmonic output that can be achieved.