title: Breather soliton dynamics in microresonators.
abstract: The generation of temporal cavity solitons in microresonators results in coherent low-noise optical frequency combs that are critical for applications in spectroscopy, astronomy, navigation or telecommunications. Breather solitons also form an important part of many different classes of nonlinear wave systems, manifesting themselves as a localized temporal structure that exhibits oscillatory behaviour. To date, the dynamics of breather solitons in microresonators remains largely unexplored, and its experimental characterization is challenging. Here we demonstrate the excitation of breather solitons in two different microresonator platforms based on silicon nitride and on silicon. We investigate the dependence of the breathing frequency on pump detuning and observe the transition from period-1 to period-2 oscillation. Our study constitutes a significant contribution to understanding the soliton dynamics within the larger context of nonlinear science.
authors.affiliation: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.|School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA.
authors.forename: Mengjie
authors.initials: M
authors.lastname: Yu
authors.affiliation: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
authors.forename: Jae K
authors.initials: JK
authors.lastname: Jang
authors.affiliation: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Okawachi
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
authors.forename: Austin G
authors.initials: AG
authors.lastname: Griffith
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
authors.forename: Kevin
authors.initials: K
authors.lastname: Luke
authors.affiliation: School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA.|Department of Electrical Engineering, Columbia University, New York, New York 10027, USA.
authors.forename: Steven A
authors.initials: SA
authors.lastname: Miller
authors.affiliation: School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA.|Department of Electrical Engineering, Columbia University, New York, New York 10027, USA.
authors.forename: Xingchen
authors.initials: X
authors.lastname: Ji
authors.affiliation: Department of Electrical Engineering, Columbia University, New York, New York 10027, USA.
authors.forename: Michal
authors.initials: M
authors.lastname: Lipson
authors.affiliation: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta