以InSb棒作为热调谐结构的亚波长B形金属孔阵列太赫兹滤波器。

Subwavelength B-shaped metallic hole array terahertz filter with InSb bar as thermally tunable structure.

作者信息

Li Wei, Kuang Dengfeng, Fan Fei, Chang Shengjiang, Lin Lie

机构信息

Institute of Modern Optics, Nankai University, Key Laboratory of Optical Information Science and Technology, Ministry of Education, Tianjin, China.

出版信息

Appl Opt. 2012 Oct 10;51(29):7098-102. doi: 10.1364/AO.51.007098.

DOI:10.1364/AO.51.007098

PMID:23052091

Abstract

We propose a subwavelength B-shaped metallic hole array filter with an embedded thermally tunable InSb semiconductor bar in the terahertz regime. The resonance frequency of this filter can be actively tuned by controlling the temperature of InSb. The transmissions of the filter are calculated with the finite-difference time domain method at various temperatures. Narrowband THz wave with the full width at half maximum of 235 GHz can be selected in the frequency range from 0.74 to 2.02 THz at temperatures from 160 to 350 K.

摘要

我们提出了一种太赫兹波段的亚波长B形金属孔阵列滤波器，该滤波器内嵌有热可调InSb半导体棒。通过控制InSb的温度，可以主动调节该滤波器的共振频率。利用时域有限差分法计算了该滤波器在不同温度下的透射率。在160至350 K的温度范围内，在0.74至2.02 THz的频率范围内可以选择半高宽为235 GHz的窄带太赫兹波。