Self-aligned nanoislands nanobeam bandedge lasers

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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. (C) 2017 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2017-03
Language
English
Article Type
Article
Keywords

PHOTONIC-CRYSTAL LASERS; PEROXIDE; CAVITIES; SENSOR; SLABS; GAIN

Citation

OPTICS EXPRESS, v.25, no.6, pp.6311 - 6319

ISSN
1094-4087
DOI
10.1364/OE.25.006311
URI
http://hdl.handle.net/10203/223707
Appears in Collection
PH-Journal Papers(저널논문)
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