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Heterostructure and Q-factor engineering for low-threshold and persistent nanowire lasing

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Skalsky, Stefan, Zhang, Yunyan, Alanis, Juan Arturo, Fonseka, H. Aruni, Sánchez, Ana M., Liu, Huiyun and Parkinson, Patrick W. (2020) Heterostructure and Q-factor engineering for low-threshold and persistent nanowire lasing. Light: Science and Applications, 9 . 43. doi:10.1038/s41377-020-0279-y

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Official URL: https://doi.org/10.1038/s41377-020-0279-y

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Abstract

Continuous room temperature nanowire lasing from silicon-integrated optoelectronic elements requires careful optimisation of both the lasing cavity Q-factor and population inversion conditions. We apply time-gated optical interferometry to the lasing emission from high-quality GaAsP/GaAs quantum well nanowire laser structures, revealing high Q-factors of 1250 ± 90 corresponding to end-facet reflectivities of R = 0.73 ± 0.02. By using optimised direct-indirect band alignment in the active region, we demonstrate a well-refilling mechanism providing a quasi-four-level system leading to multi-nanosecond lasing and record low room temperature lasing thresholds (~6 μJ cm-2 pulse-1) for III-V nanowire lasers. Our findings demonstrate a highly promising new route towards continuously operating silicon-integrated nanolaser elements.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Nanowires , Fluorescence spectroscopy , Semiconductor lasers
Journal or Publication Title: Light: Science and Applications
Publisher: Springer Nature
ISSN: 2047-7538
Official Date: 17 March 2020
Dates:
DateEvent
17 March 2020Published
2 March 2020Accepted
Date of first compliant deposit: 25 November 2020
Volume: 9
Article Number: 43
DOI: 10.1038/s41377-020-0279-y
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
PI150018Royal Societyhttp://dx.doi.org/10.13039/501100000288
EP/P000916/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/P000886/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/P006973/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
Related URLs:
  • https://doi.org/10.1038/s41377-020-0279-...
  • https://europepmc.org/articles/PMC707825...
  • https://europepmc.org/articles/PMC707825...

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