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Self-aligned nanoislands nanobeam bandedge lasers
KTH, Skolan för teknikvetenskap (SCI), Tillämpad fysik, Laserfysik. Korea Advanced Institute of Science and Technology (KAIST), South Korea.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 25, nr 6, s. 6311-6319Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We propose and demonstrate a novel one-dimensional nanobeam bandedge laser constituted by self-aligned nanoisland quantum-well (QW) structures. The formation of self-aligned InGaAsP nanoislands sandwiched between two InP claddings is the result of selective removal of QW through wet-etching processes. By controlling wet-etching time, we show a good spatial and spectral overlap between the dielectric mode and the self-aligned nanoisland structures leads to the realization of nanobeam bandedge lasers with low-threshold operations and high slope efficiencies. Optical characterization results indicate a strong correlation between the size of individual nanoisland and the threshold power of our nanobeam bandedge lasers. We obtain an approximately 81% reduction in the absorbed threshold power as we optimize the size of the nanoislands.

sted, utgiver, år, opplag, sider
Optical Society of America, 2017. Vol. 25, nr 6, s. 6311-6319
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Identifikatorer
URN: urn:nbn:se:kth:diva-206293DOI: 10.1364/OE.25.006311ISI: 000397316200041PubMedID: 28380984Scopus ID: 2-s2.0-85015972221OAI: oai:DiVA.org:kth-206293DiVA, id: diva2:1094260
Merknad

QC 20170509

Tilgjengelig fra: 2017-05-09 Laget: 2017-05-09 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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