Room Temperature Exciton-Polariton Condensation in Silicon Metasurfaces Emerging from Bound States in the Continuum

被引：26

作者：

Berghuis, Anton Matthijs ^{[1
,2
,3
]}

Castellanos, Gabriel W. ^{[1
,2
,3
]}

Murai, Shunsuke ^{[4
]}

Pura, Jose Luis ^{[5
,6
]}

Abujetas, Diego R. ^{[7
]}

van Heijst, Erik ^{[1
,2
,3
]}

Ramezani, Mohammad ^{[1
,2
,3
]}

Sanchez-Gil, Jose A. ^{[5
]}

Rivas, Jaime Gomez ^{[1
,2
,3
]}

机构：

[1] Eindhoven Univ Technol, Dept Appl Phys & Sci Educ, NL-5600 MB Eindhoven, Netherlands

[2] Eindhoven Univ Technol, Eindhoven Hendrik Casimir Inst, NL-5600 MB Eindhoven, Netherlands

[3] Eindhoven Univ Technol, Inst Complex Mol Syst ICMS, NL-5612 AJ Eindhoven, Netherlands

[4] Kyoto Univ, Grad Sch Engn, Dept Mat Chem, Katsura, Kyoto 6158510, Japan

[5] CSIC, Inst Estruct Mat IEM CSIC, Madrid 28006, Spain

[6] Univ Valladolid, GdS Optronlab, Fis Materi Condensada, Paseo Belen 19, Valladolid 47011, Spain

[7] Fribourg Univ, Phys Dept, CH-1700 Fribourg, Switzerland

来源：

NANO LETTERS | 2023年 / 23卷 / 12期

关键词：

Bound State in the Continuum; Exciton-PolaritonCondensation; Polariton Lasing; Strong Light-MatterCoupling; Metasurface; Surface Lattice Resonance; BOSE-EINSTEIN CONDENSATION; FANO RESONANCES;

D O I：

10.1021/acs.nanolett.3c01102

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show the first experimental demonstration of room-temperatureexciton-polariton (EP) condensation from a bound state in the continuum (BIC). This demonstration is achieved by strongly couplingstable excitons in an organic perylene dye with the extremely long-livedBIC in a dielectric metasurface of silicon nanoparticles. The longlifetime of the BIC, mainly due to the suppression of radiation leakage,allows for EP thermalization to the ground state before decaying.This property results in a condensation threshold of less than 5 mu Jcm(-2), 1 order of magnitude lower than the lasingthreshold reported in similar systems in the weak coupling limit.

引用

页码：5603 / 5609

页数：7

共 45 条

[1] Strong Coupling of Exciton and High-Q Mode in All-Perovskite Metasurfaces [J].