Dispersion-less Kerr solitons in spectrally confined optical cavities  

作　　者：Xiaoxiao Xue Philippe Grelu Bofan Yang Mian Wang Shangyuan Li Xiaoping Zheng Bingkun Zhou 

机构地区：[1]Department of Electronic Engineering,Beijing National Research Center for Information Science and Technology,Tsinghua University,100084 Beijing,China [2]Laboratoire ICB,UMR 6303 CNRS,UniversitéBourgogne Franche-Comté,21000 Dijon,France

出　　处：《Light(Science & Applications)》2023年第1期136-146,共11页光（科学与应用)（英文版）

基　　金：supported by the National Key R&D Program of China under grant no.2018YFA0701902;the National Natural Science Foundation of China under grant no.61690192;Zhejiang Lab under grant no.2020LC0AD01.P.G.acknowledges support from the EiPhi Graduate School under grant no.ANR-17-EURE-0004;the French ISITE-BFC programs under grant no.ANR-15-IDEX-0003.

摘　　要：Solitons are self-reinforcing localized wave packets that manifest in the major areas of nonlinear science,from optics to biology and Bose-Einstein condensates.Recently,optically driven dissipative solitons have attracted great attention for the implementation of the chip-scale frequency combs that are decisive for communications,spectroscopy,neural computing,and quantum information processing.In the current understanding,the generation of temporal solitons involves the chromatic dispersion as a key enabling physical effect,acting either globally or locally on the cavity dynamics in a decisive way.Here,we report on a novel class of solitons,both theoretically and experimentally,which builds up in spectrally confined optical cavities when dispersion is practically absent,both globally and locally.Precisely,the interplay between the Kerr nonlinearity and spectral filtering results in an infiinite hierarchy of eigenfunctions which,combined with optical gain,allow for the generation of stable dispersion-less dissipative solitons in a previously unexplored regime.When the filter order tends to infinity,we find an unexpected link between dissipative and conservative solitons,in the form of Nyquist-pulse-like solitons endowed with an ultra-flat spectrum.In contrast to the conventional dispersion-enabled nonlinear Schr?dinger solitons,these dispersion-less Nyquist solitons build on a fully confined spectrum and their energy scaling is not constrained by the pulse duration.Dispersion-less soliton molecules and their deterministic transitioning to single solitons are also evidenced.These findings broaden the fundamental scope of the dissipative soliton paradigm and open new avenues for generating soliton pulses and frequency combs endowed with unprecedented temporal and spectral features.

关 键 词：SOLITONS SOLITON CONFINED 

分 类 号：O17[理学—数学]