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- W2989673290 endingPage "104280" @default.
- W2989673290 startingPage "104280" @default.
- W2989673290 abstract "The emergence of larger-scaled two-dimensional (2D) layered materials has attracted intense research efforts and significant progress in the area of photonics and optoelectronics recently. As a remarkable representative of 2D materials, transition metal dichalcogenides (TMDCs) have demonstrated an astonishing photoconductivity and the ultrafast charge carrier dynamics, which provides excellent potentials for ultrafast optical modulators. Herein, by simply transferring a high-quality CVD-grown WSe2 multilayer on plasmon-induced transparency (PIT) metasurfaces, we demonstrate that the transmission amplitude modulation is as high as 43% and the slow light switching is up to 6 ps in the THz regime. Under photoexcitation, both functionalities are dynamically controlled within ~8 ps owing to a merit of ultrafast free carriers’ relaxation in the WSe2 multilayer. Moreover, a theoretical model consisting of two coupled harmonic oscillators and the near-field distributions are simultaneously employed to verify the strong dependence of the active PIT switching behavior on the suppression of the bright mode of split ring resonators. Our proposed versatile active WSe2-functionalized metasurface with a low cost and simple manufacturing will give researchers new insights into the ultrafast switchable metaphotonic devices." @default.
- W2989673290 created "2019-12-05" @default.
- W2989673290 creator A5003323583 @default.
- W2989673290 creator A5029843487 @default.
- W2989673290 creator A5030159862 @default.
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- W2989673290 creator A5045862765 @default.
- W2989673290 creator A5049494860 @default.
- W2989673290 creator A5055040307 @default.
- W2989673290 creator A5065098708 @default.
- W2989673290 creator A5065152882 @default.
- W2989673290 creator A5084846204 @default.
- W2989673290 creator A5085946267 @default.
- W2989673290 creator A5091868629 @default.
- W2989673290 date "2020-02-01" @default.
- W2989673290 modified "2023-09-30" @default.
- W2989673290 title "Ultrafast terahertz transmission/group delay switching in photoactive WSe2-functionalized metaphotonic devices" @default.
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