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Room-temperature InGaAs nanowire array band-edge lasers on patterned silicon-on-insulator platforms

Kim, Hyunseok, Lee, Wook-Jae, Chang, Ting-Yuan and Huffaker, Diana L. 2018. Room-temperature InGaAs nanowire array band-edge lasers on patterned silicon-on-insulator platforms. physica status solidi (RRL) - Rapid Research Letters , -. 10.1002/pssr.201800489

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Integration of ultracompact light sources on silicon platforms is regarded as a crucial requirement for various nanophotonic applications. In this work, InGaAs/InP core/shell nanowire array photonic crystal lasers are demon- strated on silicon-on-insulator substrates by selective-area epitaxy. 9  9 square-lattice nanowires forming photonic crystal cavities with a footprint of only 3.0  3.0 μm 2 , and a high Q factor of 23 000 are achieved by forming these nanowires on two-dimensional silicon gratings. Room-temperature lasing is observed from a fundamental band-edge mode at 1290 nm, which is the O-band of the telecommunication wavelength. Optimized growth templates and effective in-situ passivation of InGaAs nanowires enable the nanowire array to lase at a low threshold of 200 μJcm 2 , without any signature of heating or degradation above the threshold. These results represent a meaningful step toward ultracompact and monolithic III–V lasers on silicon photonic platforms

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Publisher: Wiley-VCH Verlag
ISSN: 1862-6254
Date of First Compliant Deposit: 21 December 2018
Date of Acceptance: 27 November 2018
Last Modified: 08 Oct 2021 23:04

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