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Yb-doped mixed sesquioxide thin films grown by pulsed laser deposition

Yb-doped mixed sesquioxide thin films grown by pulsed laser deposition
Yb-doped mixed sesquioxide thin films grown by pulsed laser deposition
Growth and characterization of compositionally tuned, ytterbium-doped mixed lutetium-scandium oxide, and pure lutetia and scandia crystalline films are presented. Pulsed laser deposition was employed to grow these sesquioxide films, of thicknesses up to 20 µm, on (0001)-sapphire substrates. Varying the atomic ratio of lutetium to scandium in the target, the lattice parameter of the resulting films could be tuned to match that of the single-crystal c-cut sapphire substrate to achieve a lattice mismatch of <0.1%. Optimization of growth parameters led to a reduction of undesirable particulates and scattering points within the film. X-ray diffraction measurements show (222) orientated epitaxial growth with crystallinity comparable to bulk crystals. Through pole figure and electron-backscatter imaging measurements, it was found that two inverted cubic lattice orientations grow with micron-scaled domains. Growth of these lattice- matched mixed sesquioxides paves the way for high quality waveguides for generation of ultrashort laser pulses.
Pulsed Laser Deposition, Thin Films, crystal waveguides, Sesquioxide, lattice matching, ytterbium
0022-0248
51-56
Prentice, Jake J.
a053f4e8-3ebd-4625-a703-fc7b03f54e9c
Grant-Jacob, James A.
c5d144d8-3c43-4195-8e80-edd96bfda91b
Shepherd, David P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
Mackenzie, Jacob I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Prentice, Jake J.
a053f4e8-3ebd-4625-a703-fc7b03f54e9c
Grant-Jacob, James A.
c5d144d8-3c43-4195-8e80-edd96bfda91b
Shepherd, David P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
Mackenzie, Jacob I.
1d82c826-fdbf-425b-ac04-be43ccf12008

Prentice, Jake J., Grant-Jacob, James A., Shepherd, David P., Eason, Robert W. and Mackenzie, Jacob I. (2018) Yb-doped mixed sesquioxide thin films grown by pulsed laser deposition. Journal of Crystal Growth, 491, 51-56. (doi:10.1016/j.jcrysgro.2018.03.039).

Record type: Article

Abstract

Growth and characterization of compositionally tuned, ytterbium-doped mixed lutetium-scandium oxide, and pure lutetia and scandia crystalline films are presented. Pulsed laser deposition was employed to grow these sesquioxide films, of thicknesses up to 20 µm, on (0001)-sapphire substrates. Varying the atomic ratio of lutetium to scandium in the target, the lattice parameter of the resulting films could be tuned to match that of the single-crystal c-cut sapphire substrate to achieve a lattice mismatch of <0.1%. Optimization of growth parameters led to a reduction of undesirable particulates and scattering points within the film. X-ray diffraction measurements show (222) orientated epitaxial growth with crystallinity comparable to bulk crystals. Through pole figure and electron-backscatter imaging measurements, it was found that two inverted cubic lattice orientations grow with micron-scaled domains. Growth of these lattice- matched mixed sesquioxides paves the way for high quality waveguides for generation of ultrashort laser pulses.

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More information

Accepted/In Press date: 26 March 2018
e-pub ahead of print date: 27 March 2018
Published date: 1 June 2018
Keywords: Pulsed Laser Deposition, Thin Films, crystal waveguides, Sesquioxide, lattice matching, ytterbium

Identifiers

Local EPrints ID: 419334
URI: https://eprints.soton.ac.uk/id/eprint/419334
ISSN: 0022-0248
PURE UUID: 2945d58a-a8b9-4c42-b8ca-4b2495b7795a
ORCID for James A. Grant-Jacob: ORCID iD orcid.org/0000-0002-4270-4247
ORCID for David P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184
ORCID for Robert W. Eason: ORCID iD orcid.org/0000-0001-9704-2204
ORCID for Jacob I. Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051

Catalogue record

Date deposited: 10 Apr 2018 16:31
Last modified: 20 Jul 2019 04:39

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