Hyperbolic Carbon Nanoforest for Phase Matching of Ordinary and Backward Electromagnetic Waves: Second Harmonic Generation
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URI (для ссылок/цитирований):
http://pubs.acs.org/doi/abs/10.1021/acsphotonics.7b00146https://elib.sfu-kras.ru/handle/2311/70267
Автор:
Popov, A. K.
Nefedov, I. S.
Myslivet, S. A.
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Базовая кафедра фотоники и лазерных технологий
Дата:
2017Журнал:
ACS PhotonicsКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q1Библиографическое описание:
Popov, A. K. Hyperbolic Carbon Nanoforest for Phase Matching of Ordinary and Backward Electromagnetic Waves: Second Harmonic Generation [Текст] / A. K. Popov, I. S. Nefedov, S. A. Myslivet // ACS Photonics. — 2017. — Т. 4 (№ 5). — С. 1240-1244Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
We show that a deliberately engineered dispersive metamaterial slab can enable the coexistence and
phase matching of ordinary fundamental and contrapropagating backward second harmonic electromagnetic
waves. Energy flux and phase velocity are contra-directed in the backward waves, which is the extraordinary phenomenon
that gives rise to unique nonlinear optical propagation processes. We demonstrate that frequencies, phase, and
group velocities, as well as the losses inherent to the guided electromagnetic modes supported by such metamaterial, can
be tailored to maximize the conversion of frequencies and to reverse the propagation direction of the generated second harmonic
wave. Such a possibility, which is of paramount importance for nonlinear photonics, is proven using a numerical model describing
the hyperbolic metamaterial made of carbon nanotubes standing on the metal surface. Extraordinary properties of the backwardwave
second harmonic generation in the reflection direction and of the corresponding frequency doubling metareflector in the
THz are investigated with a focus on the pulsed regime.