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Controlling the handedness of directly excited Laguerre-Gaussian modes in a solid-state laser

Controlling the handedness of directly excited Laguerre-Gaussian modes in a solid-state laser
Controlling the handedness of directly excited Laguerre-Gaussian modes in a solid-state laser
In this Letter, we report a novel approach for directly exciting the lowest-order Laguerre-Gaussian (LG01) donut mode with controllable handedness of the helical phase front trajectory in an end-pumped solid-state laser. Our approach is based on the use of a novel mode selection element consisting of two nanoscale thickness aluminum stripes to provide discrimination between LG01 modes with opposite handedness. This scheme has been applied to a diode-pumped Nd:YAG laser to generate and switch between LG01 modes with opposite handedness at output powers ~1W at 1064 nm.
0146-9592
3903-3906
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Daniel, J.M.O.
6196e732-cd6c-43a7-bc9f-bc4f99e72c23
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Daniel, J.M.O.
6196e732-cd6c-43a7-bc9f-bc4f99e72c23
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Lin, Di, Daniel, J.M.O. and Clarkson, W.A. (2014) Controlling the handedness of directly excited Laguerre-Gaussian modes in a solid-state laser. Optics Letters, 39 (13), 3903-3906. (doi:10.1364/OL.39.003903).

Record type: Article

Abstract

In this Letter, we report a novel approach for directly exciting the lowest-order Laguerre-Gaussian (LG01) donut mode with controllable handedness of the helical phase front trajectory in an end-pumped solid-state laser. Our approach is based on the use of a novel mode selection element consisting of two nanoscale thickness aluminum stripes to provide discrimination between LG01 modes with opposite handedness. This scheme has been applied to a diode-pumped Nd:YAG laser to generate and switch between LG01 modes with opposite handedness at output powers ~1W at 1064 nm.

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Accepted/In Press date: 30 May 2014
Published date: 25 June 2014
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 372185
URI: https://eprints.soton.ac.uk/id/eprint/372185
ISSN: 0146-9592
PURE UUID: 3341f05a-63c4-4ee9-a432-b83042ac3f0b

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Date deposited: 02 Dec 2014 11:27
Last modified: 08 Aug 2019 16:30

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Contributors

Author: Di Lin
Author: J.M.O. Daniel
Author: W.A. Clarkson

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