The University of Southampton
University of Southampton Institutional Repository

A comparative study of gadolinium gallium garnet growth by femtosecond and nanosecond pulsed laser deposition

A comparative study of gadolinium gallium garnet growth by femtosecond and nanosecond pulsed laser deposition
A comparative study of gadolinium gallium garnet growth by femtosecond and nanosecond pulsed laser deposition
The growth of epitaxial Nd:Gd (YAG) by femtosecond pulsed laser deposition is reported. We have used a Ti:sapphire laser at a wavelength of 800 nm and pulse length of 130 fs, operating at a repetition rate of 1 kHz. The film properties have been studied systematically as a function of the deposition parameters of laser fluence, spot-size, oxygen pressure, target-substrate distance and temperature. Scanning electron microscopy, atomic force microscopy and X-ray diffractometry were used to characterise the surface structure and crystallinity of the films. X-ray diffraction analysis shows that epitaxial growth has occurred. A comparison between the ion velocities produced by nanosecond and femtosecond laser ablation of the GGG target material has been investigated by the Langmuir probe technique. The results indicate a large difference in the plasma characteristics between femtosecond and nanosecond ablation, with ion velocities up to eight times faster observed in the femtosecond case.
pulsed laser deposition, plasmas, femotsecond, langmuir probe, thin films, garnet crystal, epitaxy
0169-4332
3364-3369
Darby, M.S.B.
c6ef0c2c-dd94-4e39-bae4-e785657048f0
May-Smith, T.C.
47952bbd-ce28-4507-a723-b4d80bf0f809
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Donnelly, T.
c2cd1244-ce8e-431c-a13a-f72c742ba986
Lunney, J.G.
d4fcb554-0382-47ee-8df3-ca408d4119de
Rogers, K.D.
14b1986f-2739-4671-be9b-1224955f4769
Darby, M.S.B.
c6ef0c2c-dd94-4e39-bae4-e785657048f0
May-Smith, T.C.
47952bbd-ce28-4507-a723-b4d80bf0f809
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Donnelly, T.
c2cd1244-ce8e-431c-a13a-f72c742ba986
Lunney, J.G.
d4fcb554-0382-47ee-8df3-ca408d4119de
Rogers, K.D.
14b1986f-2739-4671-be9b-1224955f4769

Darby, M.S.B., May-Smith, T.C., Eason, R.W., Donnelly, T., Lunney, J.G. and Rogers, K.D. (2007) A comparative study of gadolinium gallium garnet growth by femtosecond and nanosecond pulsed laser deposition. Applied Surface Science, 254 (11), 3364-3369. (doi:10.1016/j.apsusc.2007.11.016).

Record type: Article

Abstract

The growth of epitaxial Nd:Gd (YAG) by femtosecond pulsed laser deposition is reported. We have used a Ti:sapphire laser at a wavelength of 800 nm and pulse length of 130 fs, operating at a repetition rate of 1 kHz. The film properties have been studied systematically as a function of the deposition parameters of laser fluence, spot-size, oxygen pressure, target-substrate distance and temperature. Scanning electron microscopy, atomic force microscopy and X-ray diffractometry were used to characterise the surface structure and crystallinity of the films. X-ray diffraction analysis shows that epitaxial growth has occurred. A comparison between the ion velocities produced by nanosecond and femtosecond laser ablation of the GGG target material has been investigated by the Langmuir probe technique. The results indicate a large difference in the plasma characteristics between femtosecond and nanosecond ablation, with ion velocities up to eight times faster observed in the femtosecond case.

Text
3816 - Author's Original
Download (315kB)

More information

Published date: 30 March 2007
Keywords: pulsed laser deposition, plasmas, femotsecond, langmuir probe, thin films, garnet crystal, epitaxy

Identifiers

Local EPrints ID: 54045
URI: http://eprints.soton.ac.uk/id/eprint/54045
ISSN: 0169-4332
PURE UUID: f403cab2-4869-4929-af93-d6f680009b27
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 11 Aug 2008
Last modified: 02 Jun 2021 01:33

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×