Kundu, I orcid.org/0000-0002-3564-1903, Wang, F orcid.org/0000-0001-6801-8440, Qi, X orcid.org/0000-0003-3354-535X et al. (16 more authors) (2018) Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers. Nature Communications, 9. 3076. ISSN 2041-1723
Abstract
Single-mode frequency-tuneable semiconductor lasers based on monolithic integration of multiple cavity sections are important components, widely used in optical communications, photonic integrated circuits and other optical technologies. To date, investigations of the ultrafast switching processes in such lasers, essential to reduce frequency cross-talk, have been restricted to the observation of intensity switching over nanosecond-timescales. Here, we report coherent measurements of the ultrafast switch-on dynamics, mode competition and frequency selection in a monolithic frequency-tuneable laser using coherent time-domain sampling of the laser emission. This approach allows us to observe hopping between lasing modes on picosecond-timescales and the temporal evolution of transient multi-mode emission into steady-state single mode emission. The underlying physics is explained through a full multi-mode, temperature-dependent carrier and photon transport model. Our results show that the fundamental limit on the timescales of frequency-switching between competing modes varies with the underlying Vernier alignment of the laser cavity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) |
Funding Information: | Funder Grant number EU - European Union CGA-BM1205-1 Royal Society WM110032 EPSRC EP/J017671/1 Royal Society 2012/R2 EU - European Union CGA-BM1205-2 EU - European Union GA 665158 Royal Society WM150029 EPSRC EP/P021859/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Jun 2018 08:49 |
Last Modified: | 17 Dec 2024 09:28 |
Status: | Published |
Publisher: | Nature Publishing Group |
Identification Number: | 10.1038/s41467-018-05601-x |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:132584 |
Commentary/Response Threads
- Kundu, I, Wang, F, Qi, X, Nong, H, Dean, P, Freeman, J, Valavanis, A, Agnew, G, Grier, AT, Taimre, T, Li, L, Indjin, D, Mangeney, J, Tignon, J, Dhillon, SS, Rakić, AD, Cunningham, JE, Linfield, EH and Davies, AG Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers. (deposited 26 Jun 2018 08:49) [Currently Displayed]