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33 W radially polarized emission from a double-pass Ho:YAG thin-slab amplifier

33 W radially polarized emission from a double-pass Ho:YAG thin-slab amplifier
33 W radially polarized emission from a double-pass Ho:YAG thin-slab amplifier
The generation of a 33.7 W radially polarized output is demonstrated by way of double-pass amplification in a Ho:YAG thin-slab crystal. The amplifier system was seeded with the radially polarized output beam from a continuous-wave 13.2 W, 2.1 μm Ho:YAG rod laser which exploited gain medium bifocusing and a ring-shaped pump spot to promote preferential lasing on the radially polarized LG01 mode. By compensating for both the thermally-induced stress birefringence in the thin-slab crystal and the Gouy phase shift resulting from astigmatic focusing of the 13.2 W seed, only marginal beam degradation was observed across the 95 W range of pump power into the amplifier.
0740-3224
2395-2399
Barber, Matthew James
5682d70c-71a4-4875-a714-55704b8ac20c
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Smith, Callum Robertson
3fc58a4e-ecd6-455e-840b-275efa52fba1
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Barber, Matthew James
5682d70c-71a4-4875-a714-55704b8ac20c
Shardlow, Peter
9ca17301-8ae7-4307-8bb9-371df461520c
Smith, Callum Robertson
3fc58a4e-ecd6-455e-840b-275efa52fba1
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Barber, Matthew James, Shardlow, Peter, Smith, Callum Robertson and Clarkson, W.A. (2022) 33 W radially polarized emission from a double-pass Ho:YAG thin-slab amplifier. Journal of the Optical Society of America B, 39 (9), 2395-2399. (doi:10.1364/JOSAB.465778).

Record type: Article

Abstract

The generation of a 33.7 W radially polarized output is demonstrated by way of double-pass amplification in a Ho:YAG thin-slab crystal. The amplifier system was seeded with the radially polarized output beam from a continuous-wave 13.2 W, 2.1 μm Ho:YAG rod laser which exploited gain medium bifocusing and a ring-shaped pump spot to promote preferential lasing on the radially polarized LG01 mode. By compensating for both the thermally-induced stress birefringence in the thin-slab crystal and the Gouy phase shift resulting from astigmatic focusing of the 13.2 W seed, only marginal beam degradation was observed across the 95 W range of pump power into the amplifier.

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More information

Accepted/In Press date: 11 August 2022
Published date: 11 August 2022
Related URLs:
Learn more about Zepler Institute for Photonics and Nanoelectronics research Learn more about Zepler Institute for Photonics and Nanoelectronics research

Identifiers

Local EPrints ID: 468911
URI: http://eprints.soton.ac.uk/id/eprint/468911
DOI: doi:10.1364/JOSAB.465778
ISSN: 0740-3224
PURE UUID: 14c0271b-49bb-4639-8969-b50d6486b355
ORCID for Matthew James Barber: ORCID iD orcid.org/0000-0001-9768-6421
ORCID for Peter Shardlow: ORCID iD orcid.org/0000-0003-0459-0581

Catalogue record

Date deposited: 01 Sep 2022 16:39
Last modified: 07 Feb 2023 03:08

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Contributors

Author: Matthew James Barber ORCID iD
Author: Peter Shardlow ORCID iD
Author: Callum Robertson Smith
Author: W.A. Clarkson

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