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Self-aligned nanoislands nanobeam bandedge lasers
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. Korea Advanced Institute of Science and Technology (KAIST), South Korea.
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2017 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 25, no 6, 6311-6319 p.Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 25, no 6, 6311-6319 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-206293DOI: 10.1364/OE.25.006311ISI: 000397316200041PubMedID: 28380984ScopusID: 2-s2.0-85015972221OAI: oai:DiVA.org:kth-206293DiVA: diva2:1094260
Note

QC 20170509

Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2017-05-09Bibliographically approved

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