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High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers
Univ Twente, MESA Inst Nanotechnol, Opt Sci Grp, POB 217, NL-7500 AE Enschede, Netherlands..
Univ Twente, MESA Inst Nanotechnol, Integrated Opt Microsyst Grp, POB 217, NL-7500 AE Enschede, Netherlands..
KTH, School of Engineering Sciences (SCI), Applied Physics. Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
Univ Twente, MESA Inst Nanotechnol, Opt Sci Grp, POB 217, NL-7500 AE Enschede, Netherlands..
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 5, p. 6260-6266Article in journal (Refereed) Published
Abstract [en]

We report on the optical-gain properties of channel waveguides patterned into lattice-matched KGdxLuyEr1-x-y(WO4)(2) layers grown onto undoped KY(WO4)(2) substrates by liquid phase epitaxy. A systematic investigation of gain is performed for five different Er3+ concentrations in the range of 0.75 to 10at.% and different pump powers and signal wavelengths. In pump-probe-beam experiments, relative internal gain, i.e., signal enhancement minus absorption loss of light propagating in the channel waveguide, is experimentally demonstrated, with a maximum value of 12 +/- 5 dB/cm for signals at the peak-emission wavelength of 1534.7 nm.

Place, publisher, year, edition, pages
Optical Society of America, 2018. Vol. 26, no 5, p. 6260-6266
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-226799DOI: 10.1364/OE.26.006260ISI: 000427147200101PubMedID: 29529817Scopus ID: 2-s2.0-85042764564OAI: oai:DiVA.org:kth-226799DiVA, id: diva2:1203654
Note

QC 20180504

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2018-05-29Bibliographically approved

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