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Vortex laser from anti-resonant ring coupled cavities

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Title: Vortex laser from anti-resonant ring coupled cavities
Authors: Kerridge-Johns, W
Damzen, MJ
Item Type: Journal Article
Abstract: Optical vortex Laguerre-Gaussian (LG0l) modes have wide-ranging applications due to their annular spatial form and orbital angular momentum. Their direct generation from a laser is attractive, due to the pure and high-power modes possible; however, previous demonstrations have had limited ranges of applicability. Here, we propose and implement direct LG0l vortex mode generation with an anti-resonant ring (ARR) coupled laser cavity geometry, where the gain medium inside the ARR is shared between two laser cavities. This generation uses standard wavelength-insensitive optical components, is suitable for high peak and average power levels, and could be applied to any bulk gain medium in pulsed or continuous wave regimes. This work demonstrates the technique with a diode end-pumped Nd:YVO4 gain medium. From 24 W of pump power, 8.9 W LG01 and 4.3 W LG02 modes were generated, all with high mode purity and pure handedness. The LG01 mode handedness was controlled with a new technique.
Issue Date: 10-Dec-2018
Date of Acceptance: 10-Sep-2018
URI: http://hdl.handle.net/10044/1/64648
DOI: https://dx.doi.org/10.1364/OE.26.032839
ISSN: 1094-4087
Publisher: Optical Society of America (OSA)
Start Page: 32839
End Page: 32846
Journal / Book Title: Optics Express
Volume: 26
Issue: 25
Copyright Statement: © 2018 The Author(s). Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Keywords: Science & Technology
Physical Sciences
Optics
ORBITAL ANGULAR-MOMENTUM
OPTICAL VORTEX
GAUSSIAN MODES
GENERATION
BEAMS
LIGHT
0205 Optical Physics
1005 Communications Technologies
0906 Electrical And Electronic Engineering
Publication Status: Published
Online Publication Date: 2018-11-30
Appears in Collections:Physics
Photonics
Faculty of Natural Sciences