Variable-focus terahertz lens

被引：87

作者：

Scherger, Benedikt ^{[1
,2
]}

Joerdens, Christian ^{[1
]}

Koch, Martin ^{[2
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Hochfrequenztech, D-38106 Braunschweig, Germany

[2] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 05期

关键词：

TIME-DOMAIN SPECTROSCOPY; FILLED OPTICAL LENS; PHASE MODULATOR; FREQUENCY-RANGE; TRANSMISSION; FIBERS; WAVES; TECHNOLOGY;

D O I：

10.1364/OE.19.004528

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a variable focus lens for the THz range. The focal length can be changed by pumping a medical white oil in and out of the lens body. Due to the optical transparency of the liquid and a similar refractive index in the visible frequency range, the THz beam path can be aligned using conventional optical light sources. This type of lens might find applications in terahertz based quality control, stand-off detection and wireless communication systems. (C) 2011 Optical Society of America

引用

页码：4528 / 4535

页数：8

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