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Laser recrystalliza...
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Coucheron, David A.
(author)
Laser recrystallization and inscription of compositional microstructures in crystalline SiGe-core fibres
- Article/chapterEnglish2016
Publisher, publication year, extent ...
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2016-10-24
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Nature Publishing Group,2016
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-196389
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-196389URI
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https://doi.org/10.1038/ncomms13265DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20161128
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Glass fibres with silicon cores have emerged as a versatile platform for all-optical processing, sensing and microscale optoelectronic devices. Using SiGe in the core extends the accessible wavelength range and potential optical functionality because the bandgap and optical properties can be tuned by changing the composition. However, silicon and germanium segregate unevenly during non-equilibrium solidification, presenting new fabrication challenges, and requiring detailed studies of the alloy crystallization dynamics in the fibre geometry. We report the fabrication of SiGe-core optical fibres, and the use of CO2 laser irradiation to heat the glass cladding and recrystallize the core, improving optical transmission. We observe the ramifications of the classic models of solidification at the microscale, and demonstrate suppression of constitutional undercooling at high solidification velocities. Tailoring the recrystallization conditions allows formation of long single crystals with uniform composition, as well as fabrication of compositional microstructures, such as gratings, within the fibre core.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Fokine, MichaelKTH,Tillämpad fysik(Swepub:kth)u1jem2t9
(author)
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Patil, Nilesh
(author)
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Breiby, Dag Werner
(author)
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Buset, Ole Tore
(author)
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Healy, Noel
(author)
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Peacock, Anna C.
(author)
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Hawkins, Thomas
(author)
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Jones, Max
(author)
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Ballato, John
(author)
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Gibson, Ursula J.KTH,Tillämpad fysik(Swepub:kth)u12d3i3m
(author)
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KTHTillämpad fysik
(creator_code:org_t)
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In:Nature Communications: Nature Publishing Group72041-1723
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Coucheron, David ...
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Fokine, Michael
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Patil, Nilesh
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Breiby, Dag Wern ...
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Buset, Ole Tore
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Healy, Noel
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Peacock, Anna C.
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Hawkins, Thomas
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Jones, Max
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Ballato, John
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Gibson, Ursula J ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Nature Communica ...
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Royal Institute of Technology