Er-doped Tellurite glasses for planar waveguide power amplifier with extended gain bandwidth


Mackenzie, J.I., Murugan, G.S., Suzuki, T., Ohishi, Y., Yu, A.W. and Abshire, J.B. (2012) Er-doped Tellurite glasses for planar waveguide power amplifier with extended gain bandwidth. In, Clarkson, W. Andrew and Shori, Ramesh K. (eds.) Solid State Lasers XXI: Technology and Devices. Photonics West 2012 Bellingham, US, The International Society for Optical Engineering, 823514-[8pp]. (Proceedings of SPIE, 8235). (doi:10.1117/12.908003).

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Description/Abstract

Tellurite glass compositions doped with erbium and erbium/ytterbium optimised to support extended gain bandwidth with significant amplification have been fabricated, and their thermal, optical absorption, excitation and luminescence properties investigated. Each rare-earth dopant concentration was set at 1x10-20cm-3. Broad emission cross-section bandwidths up to 50nm FWHM were observed, with fluorescence lifetimes of ~3ms. Collinear pump probe measurements on ~4mm thick bulk samples revealed peak gains of up to 2.1dB/cm at a wavelength of 1535nm in the co-doped material, with an incident pump intensity of only Iinc~8kWcm-2 at a wavelength of 974nm. At equivalent absorbed pump powers between co-doped and single doped materials the relative gain was 1.25dB/cm (Iinc~4kWcm-2) and 0.9dB/cm (Iinc~8kWcm-2) respectively, demonstrating efficient energy transfer from the ytterbium to erbium ions. Excited state absorption at longer wavelengths was observed and characterised and its implication on realising sufficient gain in the wavelength band of interest is discussed

Item Type: Book Section
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
ePrint ID: 335860
Date Deposited: 15 Mar 2012 09:12
Last Modified: 27 Mar 2014 20:19
Research Funder: EPSRC
Projects:
Integrated Photonic Materials and Devices
Funded by: EPSRC (EP/J008052/1)
Led by: Robert William Eason
1 March 2012 to 29 February 2016
Publisher: The International Society for Optical Engineering
URI: http://eprints.soton.ac.uk/id/eprint/335860

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