nl8b00334_si_001.pdf (1.42 MB)
Vertically Emitting Indium Phosphide Nanowire Lasers
journal contribution
posted on 2018-05-21, 00:00 authored by Wei-Zong Xu, Fang-Fang Ren, Dimitars Jevtics, Antonio Hurtado, Li Li, Qian Gao, Jiandong Ye, Fan Wang, Benoit Guilhabert, Lan Fu, Hai Lu, Rong Zhang, Hark Hoe Tan, Martin D. Dawson, Chennupati JagadishSemiconductor
nanowire (NW) lasers have attracted considerable
research effort given their excellent promise for nanoscale photonic
sources. However, NW lasers currently exhibit poor directionality
and high threshold gain, issues critically limiting their prospects
for on-chip light sources with extremely reduced footprint and efficient
power consumption. Here, we propose a new design and experimentally
demonstrate a vertically emitting indium phosphide (InP) NW laser
structure showing high emission directionality and reduced energy
requirements for operation. The structure of the laser combines an
InP NW integrated in a cat’s eye (CE) antenna. Thanks to the
antenna guidance with broken asymmetry, strong focusing ability, and
high Q-factor, the designed InP CE-NW lasers exhibit
a higher degree of polarization, narrower emission angle, enhanced
internal quantum efficiency, and reduced lasing threshold. Hence,
this NW laser–antenna system provides a very promising approach
toward the achievement of high-performance nanoscale lasers, with
excellent prospects for use as highly localized light sources in present
and future integrated nanophotonics systems for applications in advanced
sensing, high-resolution imaging, and quantum communications.
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Keywords
quantum communicationslasing thresholdemission angleenergy requirementsthreshold gainresearch effortNW laser structurepower consumptionnanophotonics systemsindium phosphidelight sourcesquantum efficiencyVertically Emitting Indium Phosphide Nanowire Lasers Semiconductor nanowireInP CE-NW lasers exhibitInP NWnanoscale lasersnanoscale photonic sourceson-chip light sourcesantenna guidanceemission directionalityNW lasers
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