The University of Southampton
University of Southampton Institutional Repository

Fabrication of photonic crystals in rare-earth doped chalcogenide glass films for enhanced upconversion

Pollard, M.E., Knight, K.J., Parker, G.J., Hewak, D.W. and Charlton, M.D.B., (2012) Fabrication of photonic crystals in rare-earth doped chalcogenide glass films for enhanced upconversion Jiang, Shibin, Digonnet, Michel J.F. and Dries, J. Christopher (eds.) At SPIE Photonics West 2012, United States. 21 - 26 Jan 2012.

Record type: Conference or Workshop Item (Paper)

Abstract

Gallium lanthanum oxysulfide (GLSO) is a promising host material for observing strong upconversion emission from trivalent rare-earth ions such as erbium (Er3+). Its attractive properties include high rare-earth solubility due to the lanthanum content of the glass former, a high refractive index (n = 2.2 at 550nm) for high radiative efficiency, and a low maximum phonon energy of approximately 425cm-1. Photonic crystals meanwhile can provide controlled light extraction, and may be capable of suppressing unwanted IR emission from lower lying metastable states. Here, we describe the fabrication of photonic crystals in annealed films of Er3+-doped GLSO deposited by RF sputtering. The most intense visible upconversion emission is observed in films annealed at 550°C, close to the bulk glass transition temperature. Hexagonal lattice photonic crystals are subsequently milled into the films using a focused ion beam (FIB). The milling parameters are optimized to produce the most vertical sidewall profile.

PDF 5402.pdf - Other
Download (696kB)

More information

e-pub ahead of print date: 2012
Additional Information: #8257
Venue - Dates: SPIE Photonics West 2012, United States, 2012-01-21 - 2012-01-26
Organisations: Optoelectronics Research Centre, Electronics & Computer Science

Identifiers

Local EPrints ID: 336500
URI: http://eprints.soton.ac.uk/id/eprint/336500
PURE UUID: ba362e76-27ea-4c01-87d9-919f02d259fb
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

Catalogue record

Date deposited: 28 Mar 2012 13:35
Last modified: 30 Sep 2017 04:26

Export record

Contributors

Author: M.E. Pollard
Author: K.J. Knight
Author: G.J. Parker
Author: D.W. Hewak ORCID iD
Author: M.D.B. Charlton
Editor: Shibin Jiang
Editor: Michel J.F. Digonnet
Editor: J. Christopher Dries

University divisions

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.

×