Conjugated polymer-based broadband terahertz wave modulator

被引：61

作者：

Zhang, Bo ^{[1
]}

He, Ting ^{[1
]}

Shen, Jingling ^{[1
]}

Hou, Yanbing ^{[2
]}

Hu, Yufeng ^{[2
]}

Zang, Mengdi ^{[1
]}

Chen, Tianji ^{[1
]}

Feng, Shengfei ^{[1
]}

Teng, Feng ^{[2
]}

Qin, Liang ^{[2
]}

机构：

[1] Capital Normal Univ, Key Lab Terahertz Optoelect, Beijing Key Lab Terahertz Spect & Imaging, Minist Educ,Dept Phys, Beijing 100048, Peoples R China

[2] Beijing Jiaotong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China

来源：

OPTICS LETTERS | 2014年 / 39卷 / 21期

基金：

中国国家自然科学基金;

关键词：

METAMATERIALS; TECHNOLOGY; LASERS;

D O I：

10.1364/OL.39.006110

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical broadband terahertz (THz) wave modulator, based on a polymer-inorganic interface, is investigated. The THz pulse transmission was efficiently modulated by an external continuous wave (CW) laser. The effects on the poly[2-methoxy-5-(2'-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV)/silicon interface were measured by THz time-domain spectroscopy. The modulation factor reached 99.6%, at an external laser beam intensity of 6.3 W/cm(2). In the proposed THz-CW system, a significant fall (in both THz transmission and reflection) was also observed at the MEH-PPV/Si interface. This reduction in THz transmission and reflection has been induced by absorption at the MEH-PPV/Si interface. The results show that an optically controlled polymer/inorganic broadband THz modulator can be realized. (C) 2014 Optical Society of America

引用

页码：6110 / 6113

页数：4

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