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Adaptable beam profiles from a dual-cavity Nd:YAG laser

Adaptable beam profiles from a dual-cavity Nd:YAG laser
Adaptable beam profiles from a dual-cavity Nd:YAG laser
We report a technique to tailor a laser beam profile from a donut to quasi-top-hat intensity distribution, directly from the laser, simply achieved by simultaneous excitation and control of the relative contributions of the fundamental (TEM00) and first order Laguerre-Gaussian (LG01) transverse modes. Exploiting a dual-cavity configuration with a single Nd:YAG gain element, adaptable continuous-wave laser beam profiles from the primary cavity could be obtained by varying the diffraction loss of an acousto-optic modulator in the secondary cavity. We investigated the resultant beam profiles as a function of pump power and the AOM diffraction loss, and discuss the prospects for tunable laser beams profiles.
0146-9592
1740-1743
Kim, D.J.
0fd9f257-64e8-47c1-9b69-5ef5dd10db8d
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a
Kim, D.J.
0fd9f257-64e8-47c1-9b69-5ef5dd10db8d
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a

Kim, D.J., Mackenzie, J.I. and Kim, J.W. (2016) Adaptable beam profiles from a dual-cavity Nd:YAG laser. Optics Letters, 41 (8), 1740-1743. (doi:10.1364/OL.41.001740).

Record type: Article

Abstract

We report a technique to tailor a laser beam profile from a donut to quasi-top-hat intensity distribution, directly from the laser, simply achieved by simultaneous excitation and control of the relative contributions of the fundamental (TEM00) and first order Laguerre-Gaussian (LG01) transverse modes. Exploiting a dual-cavity configuration with a single Nd:YAG gain element, adaptable continuous-wave laser beam profiles from the primary cavity could be obtained by varying the diffraction loss of an acousto-optic modulator in the secondary cavity. We investigated the resultant beam profiles as a function of pump power and the AOM diffraction loss, and discuss the prospects for tunable laser beams profiles.

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Accepted/In Press date: 11 March 2016
e-pub ahead of print date: 6 April 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 390212
URI: http://eprints.soton.ac.uk/id/eprint/390212
ISSN: 0146-9592
PURE UUID: 225c1413-2233-4bef-9997-e77b1d2a6fdc
ORCID for J.I. Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051

Catalogue record

Date deposited: 14 Jun 2016 10:30
Last modified: 15 Mar 2024 03:07

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Contributors

Author: D.J. Kim
Author: J.I. Mackenzie ORCID iD
Author: J.W. Kim

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