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Broadband single transverse-mode fluorescence sources based on ribs fabricated in pulsed laser deposited Ti:sapphire waveguides

Broadband single transverse-mode fluorescence sources based on ribs fabricated in pulsed laser deposited Ti:sapphire waveguides
Broadband single transverse-mode fluorescence sources based on ribs fabricated in pulsed laser deposited Ti:sapphire waveguides
Active rib waveguides with depths and widths varying from 3 to 5 µm and from 9 to 24 µm, respectively, have been structured by Ar+-beam etching in pulsed laser deposited Ti:sapphire layers. Losses in the channel structures were essentially at the same levels as the unstructured planar waveguide host, therefore suggesting that there is no significant additional contribution to loss from the rib-fabrication procedure. Measurements of the beam-propagation factors, Mx2 and My2, indicate single-transverse-mode fluorescence emission. The fluorescence output power was in the order of 300 µW when the structures were pumped by a 3-W multiline argon laser. These characteristics make the rib structures suitable as light sources for optical coherence tomography applications and facilitate their coupling to the optical fibre interferometers of such systems.
0947-8396
1195-1198
Grivas, Christos
7f564818-0ac0-4127-82a7-22e87ac35f1a
May-Smith, Timothy
47952bbd-ce28-4507-a723-b4d80bf0f809
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Jelínek, M.
058ae7ba-cd86-4f99-990e-2e8f78cd4484
Grivas, Christos
7f564818-0ac0-4127-82a7-22e87ac35f1a
May-Smith, Timothy
47952bbd-ce28-4507-a723-b4d80bf0f809
Shepherd, David
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Pollnau, M.
1094856b-791a-4050-98d9-c07777d5f0f5
Jelínek, M.
058ae7ba-cd86-4f99-990e-2e8f78cd4484

Grivas, Christos, May-Smith, Timothy, Shepherd, David, Eason, R.W., Pollnau, M. and Jelínek, M. (2004) Broadband single transverse-mode fluorescence sources based on ribs fabricated in pulsed laser deposited Ti:sapphire waveguides. Applied Physics A: Materials Science & Processing, 79 (4/6), 1195-1198. (doi:10.1007/s00339-004-2716-9).

Record type: Article

Abstract

Active rib waveguides with depths and widths varying from 3 to 5 µm and from 9 to 24 µm, respectively, have been structured by Ar+-beam etching in pulsed laser deposited Ti:sapphire layers. Losses in the channel structures were essentially at the same levels as the unstructured planar waveguide host, therefore suggesting that there is no significant additional contribution to loss from the rib-fabrication procedure. Measurements of the beam-propagation factors, Mx2 and My2, indicate single-transverse-mode fluorescence emission. The fluorescence output power was in the order of 300 µW when the structures were pumped by a 3-W multiline argon laser. These characteristics make the rib structures suitable as light sources for optical coherence tomography applications and facilitate their coupling to the optical fibre interferometers of such systems.

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Published date: 2004

Identifiers

Local EPrints ID: 13939
URI: http://eprints.soton.ac.uk/id/eprint/13939
ISSN: 0947-8396
PURE UUID: 155223e0-64b2-406a-ba00-48d03f42ad00
ORCID for David Shepherd: ORCID iD orcid.org/0000-0002-4561-8184
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 12 Jan 2005
Last modified: 21 Sep 2021 01:33

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