Surface‐Plasmon‐Assisted Control of Ultrafast Optical Relaxation Traces

Авторы: Kiryanov Maxim Andreevich, Novikov Ilya Alekseevich, Frolov Aleksandr Yurievich, Dolgova Tatyana Viktorovna, Fedyanin Andrey Anatolyevich
Журнал: Laser and Photonics Reviews
Год издания: 2025
Издательство: Wiley - VCH Verlag GmbH & CO. KGaA
Местоположение издательства: Germany
Первая страница: 2500053
DOI: 10.1002/lpor.202500053
Аннотация: The time-dependent response of a material to a short laser pulse excitation directly reflects ultrafast physical processes within the material. In optical pump-probe experiments these processes can be observed due to laser-induced modification of material dielectric permittivity. In nanostructured systems resonant sensitivity of optical response to dielectric permittivity may provide a strong dependence of the relaxation trace on the probe wavelength. In this work, an anomalous wavelength-dependent temperature nonlinearity of the optical response of a plasmonic crystal on the picosecond timescale is shown, controlled by the system parameters and observed in the spectral vicinity of a surface plasmon resonance. A practical method for adjusting the picosecond relaxation traces of optical response is proposed on the basis of resonant probe. The effect is demonstrated experimentally and numerically. The phenomenological descriptionis proposed.
Добавил в систему: Новиков Илья Алексеевич

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА