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III-nitride tunable cup-cavities supporting quasi whispering gallery modes from ultraviolet to infrared
AF Ioffe Phys Technical Institute, Russia.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-9840-7364
AF Ioffe Phys Technical Institute, Russia.
AF Ioffe Phys Technical Institute, Russia.
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2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5, no 17970Article in journal (Refereed) Published
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Abstract [en]

Rapidly developing nanophotonics needs microresonators for different spectral ranges, formed by chip-compatible technologies. In addition, the tunable ones are much in demand. Here, we present site-controlled III-nitride monocrystal cup-cavities grown by molecular beam epitaxy. The cup-cavities can operate from ultraviolet to near-infrared, supporting quasi whispering gallery modes up to room temperature. Besides, their energies are identical in large ripened crystals. In these cavities, the refractive index variation near an absorption edge causes the remarkable effect of mode switching, which is accompanied by the spatial redistribution of electric field intensity with concentration of light into a subwavelength volume. Our results shed light on the mode behavior in semiconductor cavities and open the way for single-growth-run manufacturing the devices comprising an active region and a cavity with tunable mode frequencies.

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NATURE PUBLISHING GROUP , 2015. Vol. 5, no 17970
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Physical Sciences Chemical Sciences
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URN: urn:nbn:se:liu:diva-123749DOI: 10.1038/srep17970ISI: 000366190000001PubMedID: 26656267OAI: oai:DiVA.org:liu-123749DiVA: diva2:892983
Note

Funding Agencies|Russian Science Foundation [14-22-00107]; Swedish Research Council (VR); Swedish Energy Agency

Available from: 2016-01-11 Created: 2016-01-11 Last updated: 2017-11-30

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