Open AccessTerahertz-frequency temporal differentiator enabled by a high-Q resonator
Author(s) -
Jingya Xie,
Xi Zhu,
Hongxiang Zhang,
Xiaofei Zang,
Lin Chen,
A. V. Balakin,
A. P. Shkurinov,
Yiming Zhu
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.387775
Subject(s) - differentiator , terahertz radiation , resonator , terahertz spectroscopy and technology , electric field , q factor , pulse shaping , optoelectronics , optics , electronic circuit , computer science , electronic engineering , materials science , physics , telecommunications , bandwidth (computing) , engineering , laser , quantum mechanics
Terahertz (THz) fundamental "building blocks" equivalent to those used in multi-functional electronic circuits are very helpful for actual applications in THz data-processing technology and communication. Here, we theoretically and experimentally demonstrate a THz temporal differentiator based on an on-chip high-quality (Q) factor resonator. The resonator is made of low-loss high-resistivity silicon material in a monolithic, integrated platform, which is carefully designed to operate near the critical coupling region. The experiment demonstrates that the device can perform the first-order time derivative of the input signal electric field complex envelope at 214.72 GHz. Our investigation provides an effective approach for terahertz pulse re-shaping and real-time differential computing units.
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