Scalable interdigitated photoconductive emitters for the electrical modulation of terahertz beams with arbitrary linear polarization

被引：11

作者：

Mosley, C. D. W. ^{[1
]}

Staniforth, M. ^{[1
,2
]}

Serrano, A. I. Hernandez ^{[1
]}

Pickwell-MacPherson, E. ^{[1
]}

Lloyd-Hughes, J. ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England

[2] Univ Warwick, Dept Chem, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England

来源：

AIP ADVANCES | 2019年 / 9卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

RADIATION; ANTENNA;

D O I：

10.1063/1.5086428

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A multi-element interdigitated photoconductive emitter for broadband THz polarization rotation is proposed and experimentally verified. The device consists of separate pixels for the emission of horizontally and vertically polarized THz radiation. The broadband (0.3-5.0 THz) nature of the device is demonstrated, and the polarization angle of the generated far-field THz radiation is shown to be readily controlled by varying the relative bias voltage applied to the horizontally and vertically emitting pixels. The device is scalable in design, and with its simple method of polarization rotation it allows the modulation of the generated THz polarization at rates significantly faster than those achievable in ellipsometry systems based on mechanically rotating components. (C) 2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

引用

页数：6