Dynamic Photoinduced Controlling of the Large Phase Shift of Terahertz Waves via Vanadium Dioxide Coupling Nanostructures

ACS Photonics ◽  
2018 ◽  
Vol 5 (8) ◽  
pp. 3040-3050 ◽  
Author(s):  
Yuncheng Zhao ◽  
Yaxin Zhang ◽  
Qiwu Shi ◽  
Shixiong Liang ◽  
Wanxia Huang ◽  
...  
Keyword(s):  
Phase Shift ◽  
Vanadium Dioxide ◽  
Terahertz Waves ◽  
Large Phase

Chiral coding metasurfaces with integrated vanadium dioxide for thermo-optic modulation of terahertz waves

2020 ◽  
Vol 826 ◽  
pp. 154174 ◽  
Author(s):  
Fuyu Li ◽  
Tingting Tang ◽  
Jie Li ◽  
Li Luo ◽  
Chaoyang Li ◽  
...  
Keyword(s):  
Vanadium Dioxide ◽  
Terahertz Waves

Large phase shift of nonlocal optical spatial solitons

2004 ◽  
Vol 69 (1) ◽  
Author(s):  
Qi Guo ◽  
Boren Luo ◽  
Fahuai Yi ◽  
Sien Chi ◽  
Yiqun Xie
Keyword(s):  
Phase Shift ◽  
Spatial Solitons ◽  
Large Phase ◽  
Optical Spatial Solitons

scholarly journals Large phase shift of spatial soliton in lead glass by cross-phase modulation in pump-signal geometry

2014 ◽  
Vol 23 (8) ◽  
pp. 084204 ◽  
Author(s):  
Qian Shou ◽  
Dong-Wen Liu ◽  
Xiang Zhang ◽  
Wei Hu ◽  
Qi Guo
Keyword(s):  
Phase Shift ◽  
Phase Modulation ◽  
Spatial Soliton ◽  
Lead Glass ◽  
Cross Phase Modulation ◽  
Large Phase ◽  
Pump Signal

Very large phase shift of microwave signals in a 6 nm Hf x Zr1−x O2 ferroelectric at ±3 V

2017 ◽  
Vol 28 (38) ◽  
pp. 38LT04 ◽  
Author(s):  
Mircea Dragoman ◽  
Mircea Modreanu ◽  
Ian M Povey ◽  
Sergiu Iordanescu ◽  
Martino Aldrigo ◽  
...  
Keyword(s):  
Phase Shift ◽  
Large Phase ◽  
Microwave Signals

scholarly journals Vanadium Dioxide-Based Bifunctional Metamaterial for Terahertz Waves

2020 ◽  
Vol 12 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Man Zhang ◽  
Jiahe Zhang ◽  
Apeng Chen ◽  
Zhengyong Song
Keyword(s):  
Vanadium Dioxide ◽  
Terahertz Waves

scholarly journals Large phase modulation of THz wave via an enhanced resonant active HEMT metasurface

Nanophotonics ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 153-170 ◽  
Author(s):  
Yaxin Zhang ◽  
Yuncheng Zhao ◽  
Shixiong Liang ◽  
Bo Zhang ◽  
Lan Wang ◽  
...  
Keyword(s):  
Phase Shift ◽  
Phase Modulation ◽  
High Speed ◽  
High Electron Mobility Transistor ◽  
Transmission Mode ◽  
High Electron ◽  
Carrier Distribution ◽  
Application Systems ◽  
Large Phase ◽  
Thz Waves

AbstractTerahertz (THz) science and technology promise unique applications in high-speed communications, high-accuracy imaging, and so on. To keep up with the demand for THz systems, THz dynamic devices should feature large phase shift modulation and high speed. To date, however, only a few devices can efficiently manipulate the phase of THz waves. In this paper, we demonstrate that efficient phase modulation of THz waves can be addressed by an active and enhanced resonant metamaterial embedded with a nanostructured 2D electron gas (2DEG) layer of a GaN high electron mobility transistor (HEMT). The enhanced resonant metaunit couples the traditional dipolar and inductance-capacitance resonances together to realize a coupling mode with enhanced resonance. Embedded with the nanostructured 2DEG layer of GaN HEMT, the resonance intensity and surface current circuit of the enhanced resonant mode in the metamaterial unit can be dynamically manipulated by the electrical control of the carrier distribution and depletion of the 3 nm 2DEG, leading to a phase shift greater than 150° in simulation. In the dynamic experiments, a 137° phase shift was achieved with an external controlling voltage of only several volts in the THz transmission mode. This work represents the first realization of a phase shift greater than 100° in a dynamic experiment in transmission mode using an active metamaterial structure with only a single layer. In addition, given the high-speed modulation ability of the HEMT, this concept provides a promising approach for the development of a fast and effective phase modulator in THz application systems.

scholarly journals Large phase shift via polarization-coupling cascading

2012 ◽  
Vol 20 (12) ◽  
pp. 13419 ◽  
Author(s):  
Juan Huo ◽  
Xianfeng Chen
Keyword(s):  
Phase Shift ◽  
Large Phase
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