Pump-Wavelength Selective All-Optical Terahertz Metasurface with Independent Amplitude and Frequency Modulations DOI
Jing Yuan, Zhengang Lu,

Guichuan Xu

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Tunable terahertz (THz) metasurfaces based on optical control are crucial in high-speed communication, nondestructive testing, and imaging. However, realizing independent tunability of multiple functions the THz band remains challenging due to limitations materials. Here, we experimentally demonstrate a novel metasurface that employs two materials combined with an electric-field-coupled inductor capacitor microstructure achieve all-optical modulations amplitude frequency. Amplitude modulation is achieved through near-infrared pumping, reaching maximum depth 94.42%. Broadband frequency modulation, spanning 0.21 THz, accomplished using visible light pumping. The function owing odd-order nonlinear polarization characteristics perovskite selective photon transition between bottom Si island film. This work introduces approach for devices, offering valuable insights developing metasurfaces, intelligent windows, multidimensional ultrafast switches.

Language: Английский

Construction of anti-oxidative and efficient Ni2Si/SiC/C-based microwave absorption composite by recycling coal hydrogasification residue DOI

Xiaojie Xue,

Liping Liang, Dage Liu

et al.

Fuel, Journal Year: 2025, Volume and Issue: 397, P. 135432 - 135432

Published: April 17, 2025

Language: Английский

Citations

0
Hetero–interface engineering of biomass carbon foam for broadband microwave absorption and thermal insulation properties DOI
Hanjun Wei, Siyu Chen, Zhiyong Chen

et al.

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120385 - 120385

Published: May 1, 2025

Language: Английский

Citations

0
Pump-Wavelength Selective All-Optical Terahertz Metasurface with Independent Amplitude and Frequency Modulations DOI
Jing Yuan, Zhengang Lu,

Guichuan Xu

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Tunable terahertz (THz) metasurfaces based on optical control are crucial in high-speed communication, nondestructive testing, and imaging. However, realizing independent tunability of multiple functions the THz band remains challenging due to limitations materials. Here, we experimentally demonstrate a novel metasurface that employs two materials combined with an electric-field-coupled inductor capacitor microstructure achieve all-optical modulations amplitude frequency. Amplitude modulation is achieved through near-infrared pumping, reaching maximum depth 94.42%. Broadband frequency modulation, spanning 0.21 THz, accomplished using visible light pumping. The function owing odd-order nonlinear polarization characteristics perovskite selective photon transition between bottom Si island film. This work introduces approach for devices, offering valuable insights developing metasurfaces, intelligent windows, multidimensional ultrafast switches.

Language: Английский

Citations

0