
Proceedings Paper
Fabrication of photonic crystals in rare-earth doped chalcogenide glass films for enhanced upconversionFormat | Member Price | Non-Member Price |
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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.
Paper Details
Date Published: 20 March 2012
PDF: 10 pages
Proc. SPIE 8257, Optical Components and Materials IX, 82570V (20 March 2012); doi: 10.1117/12.908014
Published in SPIE Proceedings Vol. 8257:
Optical Components and Materials IX
Shibin Jiang; Michel J. F. Digonnet; J. Christopher Dries, Editor(s)
PDF: 10 pages
Proc. SPIE 8257, Optical Components and Materials IX, 82570V (20 March 2012); doi: 10.1117/12.908014
Show Author Affiliations
M. E. Pollard, Univ. of Southampton (United Kingdom)
K. J. Knight, The Univ. of Adelaide (Australia)
G. J. Parker, Univ. of Southampton (United Kingdom)
K. J. Knight, The Univ. of Adelaide (Australia)
G. J. Parker, Univ. of Southampton (United Kingdom)
D. W. Hewak, Univ. of Southampton (United Kingdom)
M. D. B. Charlton, Univ. of Southampton (United Kingdom)
M. D. B. Charlton, Univ. of Southampton (United Kingdom)
Published in SPIE Proceedings Vol. 8257:
Optical Components and Materials IX
Shibin Jiang; Michel J. F. Digonnet; J. Christopher Dries, Editor(s)
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