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Dissipative Kerr Solitons in a III-V Microresonator

TitleDissipative Kerr Solitons in a III-V Microresonator
Publication TypeJournal Article
Year of Publication2020
AuthorsG. Moille, L. Chang, W. Xie, A. Rao, X. Lu, M. Davanco, J. E. Bowers, and K. Srinivasan
JournalLaser Photon. Rev.
Volume14
Pagination2000022
Date PublishedAUG
Type of ArticleArticle
ISSN1863-8880
Keywordsfrequency combs, GaAs, microcombs, nanophotonics, Nonlinear optics, soliton
Abstract

Stable microresonator Kerr soliton frequency combs in a III-V platform (AlGaAs on SiO2) are demonstrated through quenching of thermorefractive effects by cryogenic cooling to temperatures between 4 and 20 K. This cooling reduces the resonator's thermorefractive coefficient, whose room-temperature value is an order of magnitude larger than that of other microcomb platforms like Si3N4, SiO2, and AlN, by more than two orders of magnitude, and makes soliton states adiabatically accessible. Realizing such phase-stable soliton operation is critical for applications that fully exploit the ultra-high effective nonlinearity and high optical quality factors exhibited by this platform.

DOI10.1002/lpor.202000022},