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Proceedings Paper

All optically-controlled multifunctional VO2 memory device for terahertz waves
Author(s): Hong-Kuan Yuan; Si-Chao Chen; Li-Guo Zhu; Zhao-Hui Zhai; Liang-Hui Du; Jiang Li
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Paper Abstract

The highly hysteretic insulator-to-metal phase transition (IMT) of vanadium dioxide (VO2) enables an effective path to actively tuning terahertz (THz) wave, which holds great promise for the next generation optical memory devices. In the THz range, existed VO2-based memory device are driven by electric, which suffers some problems, such as slow write time at scale of several seconds, complicated circuit fabrication for electric conduction, and so on. Here, we propose an all optically-controlled THz wave memory device with inexpensive, straightforward and scalable fabrication of VO2. We demonstrate the reconfigurable THz-wave memory device with 1 bit and 2 bits programmed by two continuous lasers and its potential write time of tens of microseconds driven by ultrafast amplifier laser. This work paves the way for robust multifunctionality in optically-controlled terahertz switching, photonic memory, and ultrafast terahertz optics. And combining our memory device with spatial light modulator, its functionality can be further extended into spatial dimension, such as being a programmable and reconfigurable spatial THz wave modulator for the cutting-edge THz ghost imaging.

Paper Details

Date Published: 12 March 2020
PDF: 6 pages
Proc. SPIE 11441, 2019 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 114410K (12 March 2020);
Show Author Affiliations
Hong-Kuan Yuan, Institute of Fluid Physics (China)
Si-Chao Chen, Institute of Fluid Physics (China)
Univ. of Science and Technology of China (China)
Li-Guo Zhu, Institute of Fluid Physics (China)
Microsystem & Terahertz Research Ctr. (China)
Zhao-Hui Zhai, Institute of Fluid Physics (China)
Microsystem & Terahertz Research Ctr. (China)
Liang-Hui Du, Institute of Fluid Physics (China)
Microsystem & Terahertz Research Ctr. (China)
Jiang Li, Institute of Fluid Physics (China)
Microsystem & Terahertz Research Ctr. (China)


Published in SPIE Proceedings Vol. 11441:
2019 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications
Cunlin Zhang; Xi-Cheng Zhang; Zhiming Huang, Editor(s)

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