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Waveguiding and photoluminescence in Er3+-doped Ta2O5 planar waveguides

Waveguiding and photoluminescence in Er3+-doped Ta2O5 planar waveguides
Waveguiding and photoluminescence in Er3+-doped Ta2O5 planar waveguides
The optimization of erbium-doped Ta2O5 thin film waveguides deposited by magnetron sputtering onto thermally oxidized silicon wafer is described. Optical constants of the film were determined by ellipsometry. For the slab waveguides, background losses below 0.4dB/cm at 633nm have been obtained before post-annealing. The samples, when pumped at 980nm yielded abroad photoluminescence spectrum (FWHM ~50 nm) centred at 1534nm, corresponding to 4 I 13/2 to the 4 I 15/2 transition of Er3+ ion. The samples were annealed up to 600 °C and both photoluminescence power and fluorescence lifetime increase with post-annealing temperature and a fluorescence lifetime of 2.4ms was achieved, yielding promising results for compact waveguide amplifiers
erbium doping, tantalum pentoxide, photoluminescence, high index contrast material
0022-2313
812-816
Subramanian, Ananth Z.
051aee73-cf97-4738-8784-fbaff72bd6b9
Oton, Claudio J.
7e0803bc-34e4-4c6d-8f27-1204ef1775da
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Greef, Robert
91063544-ed89-4738-b5f4-28a984bf5866
Subramanian, Ananth Z.
051aee73-cf97-4738-8784-fbaff72bd6b9
Oton, Claudio J.
7e0803bc-34e4-4c6d-8f27-1204ef1775da
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Greef, Robert
91063544-ed89-4738-b5f4-28a984bf5866

Subramanian, Ananth Z., Oton, Claudio J., Wilkinson, James S. and Greef, Robert (2009) Waveguiding and photoluminescence in Er3+-doped Ta2O5 planar waveguides. Journal of Luminescence, 129 (8), 812-816. (doi:10.1016/j.jlumin.2009.02.020).

Record type: Article

Abstract

The optimization of erbium-doped Ta2O5 thin film waveguides deposited by magnetron sputtering onto thermally oxidized silicon wafer is described. Optical constants of the film were determined by ellipsometry. For the slab waveguides, background losses below 0.4dB/cm at 633nm have been obtained before post-annealing. The samples, when pumped at 980nm yielded abroad photoluminescence spectrum (FWHM ~50 nm) centred at 1534nm, corresponding to 4 I 13/2 to the 4 I 15/2 transition of Er3+ ion. The samples were annealed up to 600 °C and both photoluminescence power and fluorescence lifetime increase with post-annealing temperature and a fluorescence lifetime of 2.4ms was achieved, yielding promising results for compact waveguide amplifiers

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Published date: August 2009
Keywords: erbium doping, tantalum pentoxide, photoluminescence, high index contrast material

Identifiers

Local EPrints ID: 78857
URI: http://eprints.soton.ac.uk/id/eprint/78857
ISSN: 0022-2313
PURE UUID: 1f23fc87-0cc8-4654-b2f2-6795f76b846b
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

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Date deposited: 16 Mar 2010
Last modified: 20 May 2020 00:26

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