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Doped sesquioxide growth by pulsed laser deposition for planar waveguide lasing applications

Doped sesquioxide growth by pulsed laser deposition for planar waveguide lasing applications
Doped sesquioxide growth by pulsed laser deposition for planar waveguide lasing applications
Sesquioxides, particularly yttria (Y2O3), lutetia (Lu2O3) and scandia (Sc2O3), are promising host materials for high power laser applications due to their high thermal conductivities, damage thesholds and their ability to incorporate a range of rare earth elements [1]; here we are focussing on thulium (Tm) and ytterbium (Yb) as our dopants.
We have demonstrated thin film growth of doped sesquioxides by pulsed laser deposition as both single layers and cladded multilayers, and their ability to act as waveguides. Growth conditions are optimised by analysis of film crystallinity and presence of particulates. Highly crystalline films with low particulate counts are then put through waveguide characterisation and lasing experiments. Our work includes the growth of a 12µm-thick crystalline thulium doped yttria waveguide on a YAG substrate that, when pumped with a maximum of 600mW at 797nm, lased with an output of 35mW at 1.95µm, with 9% slope efficiency; this is the first example of such thin film Tm:yttria lasing to our knowledge. We will discuss these results and report progress towards higher power lasing by growth of lower loss cladded multilayer structures and thicker films (>30µm), suitable for diode pumping.
Parsonage, T.L.
652160d8-72de-4846-a644-e9de62276706
Sloyan, K.A.
5b66c8be-437e-467f-aeb0-5a742eea5abf
Szela, J.W.
9870e84b-57a8-4b8d-b9fb-dfec0688c20a
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Parsonage, T.L.
652160d8-72de-4846-a644-e9de62276706
Sloyan, K.A.
5b66c8be-437e-467f-aeb0-5a742eea5abf
Szela, J.W.
9870e84b-57a8-4b8d-b9fb-dfec0688c20a
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020

Parsonage, T.L., Sloyan, K.A., Szela, J.W., Mackenzie, J.I. and Eason, R.W. (2013) Doped sesquioxide growth by pulsed laser deposition for planar waveguide lasing applications. Conference on Laser Ablation (COLA 2013), Italy. 06 - 10 Oct 2013.

Record type: Conference or Workshop Item (Paper)

Abstract

Sesquioxides, particularly yttria (Y2O3), lutetia (Lu2O3) and scandia (Sc2O3), are promising host materials for high power laser applications due to their high thermal conductivities, damage thesholds and their ability to incorporate a range of rare earth elements [1]; here we are focussing on thulium (Tm) and ytterbium (Yb) as our dopants.
We have demonstrated thin film growth of doped sesquioxides by pulsed laser deposition as both single layers and cladded multilayers, and their ability to act as waveguides. Growth conditions are optimised by analysis of film crystallinity and presence of particulates. Highly crystalline films with low particulate counts are then put through waveguide characterisation and lasing experiments. Our work includes the growth of a 12µm-thick crystalline thulium doped yttria waveguide on a YAG substrate that, when pumped with a maximum of 600mW at 797nm, lased with an output of 35mW at 1.95µm, with 9% slope efficiency; this is the first example of such thin film Tm:yttria lasing to our knowledge. We will discuss these results and report progress towards higher power lasing by growth of lower loss cladded multilayer structures and thicker films (>30µm), suitable for diode pumping.

Full text not available from this repository.

More information

e-pub ahead of print date: 2013
Venue - Dates: Conference on Laser Ablation (COLA 2013), Italy, 2013-10-06 - 2013-10-10
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 363221
URI: https://eprints.soton.ac.uk/id/eprint/363221
PURE UUID: e8d7937d-6e1c-454b-bfa0-9f22ad06c81c
ORCID for J.I. Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 20 Mar 2014 17:35
Last modified: 20 Jul 2019 01:25

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