Bi-frequency operation in a membrane external-cavity surface-emitting laser
Bi-frequency operation in a membrane external-cavity surface-emitting laser
We report on the achievement of continuous wave bi-frequency operation in a membrane external-cavity surface-emitting laser (MECSEL), which is optically pumped with up to 4 W of 808 nm pump light. The presence of spatially specific loss of the intra-cavity high reflectivity mirror allows loss to be controlled on certain transverse cavity modes. The regions of spatially specific loss are defined through the removal of Bragg layers from the surface of the cavity high reflectivity mirror in the form of crosshair patterns with undamaged central regions, which are created using a laser ablation system incorporating a digital micromirror device (DMD). By aligning the laser cavity mode with the geometric centre of the loss patterns, the laser simultaneously operated on two Hermite-Gaussian spatial modes: the fundamental HG00 and the higher order HG11 mode. We demonstrate bi-frequency operation over a range of pump powers and sizes of spatial loss features, with a wavelength separation of approximately 5 nm centred at 1005 nm.
Daykin, Jake
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Woods, Jonathan R.C.
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Bek, Roman
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Jetter, Michael
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Michler, Peter
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Mills, Ben
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Horak, Peter
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Wilkinson, James S.
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Apostolopoulos, Vasileios
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27 July 2023
Daykin, Jake
69d4c2ed-9575-41d3-af26-6f1b11e59060
Woods, Jonathan R.C.
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Bek, Roman
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Jetter, Michael
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Michler, Peter
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Mills, Ben
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Horak, Peter
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Wilkinson, James S.
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Apostolopoulos, Vasileios
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Daykin, Jake, Woods, Jonathan R.C., Bek, Roman, Jetter, Michael, Michler, Peter, Mills, Ben, Horak, Peter, Wilkinson, James S. and Apostolopoulos, Vasileios
(2023)
Bi-frequency operation in a membrane external-cavity surface-emitting laser.
PLoS ONE, 18 (7), [e0289223].
(doi:10.1371/journal.pone.0289223).
Abstract
We report on the achievement of continuous wave bi-frequency operation in a membrane external-cavity surface-emitting laser (MECSEL), which is optically pumped with up to 4 W of 808 nm pump light. The presence of spatially specific loss of the intra-cavity high reflectivity mirror allows loss to be controlled on certain transverse cavity modes. The regions of spatially specific loss are defined through the removal of Bragg layers from the surface of the cavity high reflectivity mirror in the form of crosshair patterns with undamaged central regions, which are created using a laser ablation system incorporating a digital micromirror device (DMD). By aligning the laser cavity mode with the geometric centre of the loss patterns, the laser simultaneously operated on two Hermite-Gaussian spatial modes: the fundamental HG00 and the higher order HG11 mode. We demonstrate bi-frequency operation over a range of pump powers and sizes of spatial loss features, with a wavelength separation of approximately 5 nm centred at 1005 nm.
Text
journal.pone.0289223
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Submitted date: 26 May 2023
Accepted/In Press date: 13 July 2023
Published date: 27 July 2023
Additional Information:
Funding information:
VA would like to thank the Engineering and Physical Sciences Research Council for the grant EP/T001046/1 titled "UK National Quantum Technology Hub in Sensing and Timing". https://www.ukri.org/councils/epsrc/ The funders had no role in study design, data collection and analysis,decision to publish, or preparation of the
manuscript.
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Local EPrints ID: 487962
URI: http://eprints.soton.ac.uk/id/eprint/487962
ISSN: 1932-6203
PURE UUID: 3ac0186f-23ad-44c9-b119-59a2cb55d053
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Date deposited: 11 Mar 2024 18:00
Last modified: 18 Mar 2024 03:07
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Contributors
Author:
Jake Daykin
Author:
Jonathan R.C. Woods
Author:
Roman Bek
Author:
Michael Jetter
Author:
Peter Michler
Author:
Ben Mills
Author:
Peter Horak
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