基于半导体等离子体频率光学调控的太赫兹波调制系统

Translated title of the contribution: A terahertz wave modulation system based on optical modulation of the plasma frequency of a semiconductor

Tao Yang, Jiacheng Ge, Yuan Zhou, Wei Huang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A terahertz (THz) wave optical modulation system was introduced. The modulation was based on the coupling of THz waves and THz surface plasmon by a simple slit between a razor blade and a semiconductor wafer. The modulation process was realized by changing the illumination intensity on the intrinsic semiconductor surface. With or without the optical illumination, the plasma frequency of the semiconductor was larger or smaller than the frequencies of the surface plasmon. Therefore, the THz surface plasmon propagating on the semiconductor and the THz wave coupled from the surface plasmon can be switched on and off. In comparison with conventional THz modulation approaches, this method has the advantages of wide modulation bandwidth, high speed, low cost and room temperature operation etc., which are favorable to THz wave communication applications. The simulation and experimental results prove the feasibility of the THz wave modulation system.

Translated title of the contributionA terahertz wave modulation system based on optical modulation of the plasma frequency of a semiconductor
Original languageChinese (Traditional)
Article number0203005
JournalHongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Volume48
Issue number2
DOIs
StatePublished - 25 Feb 2019
Externally publishedYes

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