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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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WRAP-Heterostructure-Q-factor-engineering-low-threshold-nanowire-lasing-Sanchez-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1123Kb) | Preview |
Official URL: https://doi.org/10.1038/s41377-020-0279-y
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 | |||||||||||||||
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| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| 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 | |||||||||||||||
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| 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: |
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