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research article

Dissipative Kerr soliton generation at 2μm in a silicon nitride microresonator

Karunakaran, Anamika Nair
•
Clementi, Marco  
•
Lafforgue, Christian  
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April 22, 2024
Optics Express

Chip -scale optical frequency combs enable the generation of highly -coherent pulsed light at gigahertz-level repetition rates, with potential technological impact ranging from telecommunications to sensing and spectroscopy. In combination with techniques such as dual -comb spectroscopy, their utilization would be particularly beneficial for sensing of molecular species in the mid -infrared spectrum, in an integrated fashion. However, few demonstrations of direct microcomb generation within this spectral region have been showcased so far. In this work, we report the generation of Kerr soliton microcombs in silicon nitride integrated photonics. Leveraging a high -Q silicon nitride microresonator, our device achieves soliton generation under milliwatt-level pumping at 1.97 mu m, with a generated spectrum encompassing a 422 nm bandwidth and extending up to 2.25 mu m. The use of a dual pumping scheme allows reliable access to several comb states, including primary combs, modulation instability combs, as well as multi- and single-soliton states, the latter exhibiting high stability and low phase noise. Our work extends the domain of silicon nitride based Kerr microcombs towards the mid -infrared using accessible factory -grade technology and lays the foundations for the realization of fully integrated mid -infrared comb sources. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

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Type
research article
DOI
10.1364/OE.515225
Web of Science ID

WOS:001233640400006

Author(s)
Karunakaran, Anamika Nair
•
Clementi, Marco  
•
Lafforgue, Christian  
•
Yakar, Ozan  
•
Stroganov, Anton
•
Varming, Poul
•
Pu, Minhao
•
Yvind, Kresten
•
Montague, Patrick
•
Bres, Camille-Sophie  
Date Issued

2024-04-22

Publisher

Optica Publishing Group

Published in
Optics Express
Volume

32

Issue

9

Start page

14929

End page

14939

Subjects

Physical Sciences

•

Frequency Comb Generation

•

Midinfrared Generation

•

Supercontinuum

•

Spectroscopy

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
PHOSL  
FunderGrant Number

Marie Sklodowska-Curie Grant Agreement

861152

Schweizerischer Nationalfonds zur Foerderung der Wissenschaftlichen Forschung

188605

European Research Council

ERC-2017-CoG 771647

Available on Infoscience
June 19, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/208665
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