Ultraviolet intracavity frequency-doubled Pr3+:LiYF4 orbital Poincaré laser | Zendy

A. Srinivasa Rao | Zendy; Katsuhiko Miamoto | Zendy; Takashige Omatsu | Zendy

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Ultraviolet intracavity frequency-doubled Pr³⁺:LiYF₄ orbital Poincaré laser

Author(s) -

A. Srinivasa Rao,

Katsuhiko Miamoto,

Takashige Omatsu

Publication year - 2020

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.411624

Subject(s) - optics , physics , superposition principle , angular momentum , laser , optical vortex , ultraviolet , atomic physics , beam (structure) , quantum mechanics

Here we demonstrate intracavity frequency-doubling of an ultra-compact (cavity length < 20 mm) Pr 3+ :LiYF 4 (YLF) orbital Poincaré laser, in which the fundamental modes are represented on an equivalent orbital Poincaré sphere (eOPS) and a singularities hybrid evolution nature sphere (SHENS). The generated ultraviolet (UV, 320 nm) output carries orbital angular momentum (OAM), and it typically exhibits an optical bottle beam with a 3-dimensional dark core, formed of a coherent superposition of eigen Laguerre-Gaussian (LG) modes. Such ultraviolet structured light beams with OAM offer many advanced applications from microscopy to materials processing.

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