Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum

Kravtsov, V.; Khestanova, E.; Benimetskiy, F.A.; Ivanova, T.; Samusev, A.K.; Sinev, I.S.; Pidgayko, D.; Mozharov, A.M.; Mukhin, I.S.; Lozhkin, M.S.; Kapitonov, Y.V.; Brichkin, A.S.; Kulakovskii, V.D.; Shelykh, I.A.; Tartakovskii, A.I.; Walker, P.M.; Skolnick, M.S.; Krizhanovskii, D.N.; Iorsh, I.V.

Авторы: Kravtsov Vasily, Khestanova Ekaterina, Benimetskiy Fedor A., Ivanova Tatiana, Samusev Anton K., Sinev Ivan S., Pidgayko Dmitry, Mozharov Alexey M., Mukhin Ivan S., Lozhkin Maksim S., Kapitonov Yuri V., Brichkin Andrey S., Kulakovskii Vladimir D., Shelykh Ivan A., Tartakovskii Alexander I., Walker Paul M., Skolnick Maurice S., Krizhanovskii Dmitry N., Iorsh Ivan V.
Журнал: LIGHT-SCIENCE & APPLICATIONS
Том: 9
Номер: 1
Год издания: 2020
Первая страница: 1
Последняя страница: 8
DOI: 10.1038/s41377-020-0286-z
Аннотация: Optical bound states in the continuum (BICs) provide a way to engineer very narrow resonances in photonic crystals. The 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 devices. However, the achievable interaction strength is limited by the purely photonic character of optical BICs. Here, we mix the optical BIC in a photonic crystal slab with excitons in the atomically thin semiconductor MoSe2 to form nonlinear exciton-polaritons with a Rabi splitting of 27 meV, exhibiting large interaction-induced spectral blueshifts. The 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 meV. Together 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.
Добавил в систему: Коновко Андрей Андреевич

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Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuumстатья