Ultrafast plasma-based terahertz modulator

Авторы: Qu Xiaomin, Huang Yindong, Zhou Bin, Gao Mingxin, Lou Jing, Feng Yifei, Zhao Zengxiu, Chang Chao, Shkurinov Alexander P., Verboncoeur John
Журнал: Optica
Том: 11
Номер: 10
Год издания: 2024
Издательство: OSA - The Optical Society
Местоположение издательства: США
Первая страница: 1478
Последняя страница: 1478
DOI: 10.1364/optica.536771
Аннотация: Plasma is the optimal choice for acquiring and modulating theextremely high visible and near-infrared light. However, fewattempts have been made to apply this strategy for the terahertz(THz) wave modulation in an ex situ manner. Here, we showa laser-driven plasma-based THz modulator (PTM) to ex situcontrol the incident THz waves. The presented PTM allowsfor the amplification or extinction of the incident THz wavescovering 0.1–2.0 THz within a few picoseconds, simply byadjusting its dipole phase. This modulation is a result of theinteraction between the PTM’s dipole and THz wave, whichcan be accurately reproduced by the spectral analysis method.Our technique offers promising opportunities to explore theplasma-based THz optics and potential applications acrossdifferent disciplines, such as THz-sensing and near-field THztechnology.
Добавил в систему: Шкуринов Александр Павлович

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