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Tailoring the 4I9/2 -> 4I13/2 emission in Er3+ ions in different hosts media

Tailoring the 4I9/2 -> 4I13/2 emission in Er3+ ions in different hosts media
Tailoring the 4I9/2 -> 4I13/2 emission in Er3+ ions in different hosts media
The 4I9/2 -> 4I13/2 emission band of Er3+ is potentially interesting for CH4 detection because it can overlap with the optical absorption band of CH4. GaLaS and GeGaS glasses doped with Er3+ ions show the desirable emission under 808 nm excitation. An attempt of spectrally shifting 4I9/2 -> 4I13/2 emission band by substituting S by O or Se to obtain a perfect match to the absorption band of CH4 leads to the weakening and disappearance of the 4I9/2 -> 4I13/2 band. This phenomenon is tentatively related to the acceleration of non-radiative relaxation in the case of oxygen addition and to the suppression of up-conversion in the selenium substitution case. The relative intensity of the 4I9/2 -> 4I13/2 band (with respect to the 4I13/2 -> 4I15/2 band) varies significantly in powdered and bulk materials. This effect is discussed in terms of the radiation diffusion (i.e. radiation trapping) model and is confirmed by Monte-Carlo simulations.
116-121
Koughia, Cyril
5e08988b-868a-4611-bbd1-69cba1fa869b
Craig, Chris
2328b42b-552e-4a82-941d-45449e952f10
Hewak, Daniel W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Kasap, Safa
79213b1c-6188-4d7c-bd6f-f89bb6d20df8
Koughia, Cyril
5e08988b-868a-4611-bbd1-69cba1fa869b
Craig, Chris
2328b42b-552e-4a82-941d-45449e952f10
Hewak, Daniel W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Kasap, Safa
79213b1c-6188-4d7c-bd6f-f89bb6d20df8

Koughia, Cyril, Craig, Chris, Hewak, Daniel W. and Kasap, Safa (2015) Tailoring the 4I9/2 -> 4I13/2 emission in Er3+ ions in different hosts media. Optical Materials, 41, 116-121. (doi:10.1016/j.optmat.2014.09.013).

Record type: Article

Abstract

The 4I9/2 -> 4I13/2 emission band of Er3+ is potentially interesting for CH4 detection because it can overlap with the optical absorption band of CH4. GaLaS and GeGaS glasses doped with Er3+ ions show the desirable emission under 808 nm excitation. An attempt of spectrally shifting 4I9/2 -> 4I13/2 emission band by substituting S by O or Se to obtain a perfect match to the absorption band of CH4 leads to the weakening and disappearance of the 4I9/2 -> 4I13/2 band. This phenomenon is tentatively related to the acceleration of non-radiative relaxation in the case of oxygen addition and to the suppression of up-conversion in the selenium substitution case. The relative intensity of the 4I9/2 -> 4I13/2 band (with respect to the 4I13/2 -> 4I15/2 band) varies significantly in powdered and bulk materials. This effect is discussed in terms of the radiation diffusion (i.e. radiation trapping) model and is confirmed by Monte-Carlo simulations.

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More information

Published date: March 2015
Additional Information: (Presented at the 5th International Workshop on Photoluminescence in Rare Earths (PRE’14): Photonic Materials and Devices, May 13–16, 2014, San Sebastian, Spain)
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 372225
URI: https://eprints.soton.ac.uk/id/eprint/372225
PURE UUID: acfeec5a-abc8-4fec-994f-9f697fd08806
ORCID for Chris Craig: ORCID iD orcid.org/0000-0001-6919-4294
ORCID for Daniel W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

Catalogue record

Date deposited: 03 Dec 2014 15:44
Last modified: 17 Sep 2019 01:08

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