Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum
作者机构:ITMO UniversitySaint Petersburg 197101Russia St.Petersburg Academic UniversitySaint Petersburg 194021Russia Saint Petersburg State Universityul.Ulyanovskaya 1Saint Petersburg 198504Russia Institute of Solid State PhysicsRASChernogolovka 142432Russia Science InstituteUniversity of IcelandDunhagi 3IS-107ReykjavikIceland Department of Physics and AstronomyUniversity of SheffieldSheffield S37RHUK
出 版 物:《Light(Science & Applications)》 (光(科学与应用)(英文版))
年 卷 期:2020年第9卷第1期
页 面:1480-1487页
核心收录:
学科分类:07[理学] 070201[理学-理论物理] 0702[理学-物理学]
基 金:funding from the Ministry of Education and Science of the Russian Federation through Megagrant No.14.Y26.31.0015 the UK EPSRC grant EP/P026850/1 the project“Hybrid polaritonics”of Icelandic Science Foundation funded by RFBR according to the research project№18-32-00527 funded by RFBR,project No 19-32-90269 partly funded by the Russian Science Foundation(Grant No.19-72-30003) support from the Government of the Russian Federation through the ITMO Fellowship and Professorship Program
摘 要:Optical bound states in the continuum(BICs)provide a way to engineer very narrow resonances in photonic *** extended interaction time in these systems is particularly promising for the enhancement of nonlinear optical processes and the development of the next generation of active optical ***,the achievable interaction strength is limited by the purely photonic character of optical ***,we mix the optical BIC in a photonic crystal slab with excitons in the atomically thin semiconductor MoSe_(2) to form nonlinear exciton-polaritons with a Rabi splitting of 27 meV,exhibiting large interaction-induced spectral *** asymptotic BIC-like suppression of polariton radiation into the far field toward the BIC wavevector,in combination with effective reduction of the excitonic disorder through motional narrowing,results in small polariton linewidths below 3 *** with a strongly wavevector-dependent Q-factor,this provides for the enhancement and control of polariton–polariton interactions and the resulting nonlinear optical effects,paving the way toward tuneable BIC-based polaritonic devices for sensing,lasing,and nonlinear optics.