Portable real-time THz imaging setup based on QC lasers

被引：0

作者：

Bonzon, Christopher ^{[1
]}

Scalari, Giacomo ^{[1
]}

Amanti, Maria I. ^{[1
]}

Castellano, Fabrizio ^{[1
]}

Turcinkova, Dana ^{[1
]}

Beck, Mattias ^{[1
]}

Faist, Jerome ^{[1
]}

机构：

[1] ETH, Inst Quantum Elect, CH-8093 Zurich, Switzerland

来源：

TERAHERTZ TECHNOLOGY AND APPLICATIONS V | 2012年 / 8261卷

关键词：

Terahertz; Quantum cascade; Real-time imaging; Semiconductor; Laser; QUANTUM-CASCADE LASER; TERAHERTZ; COMPACT; MODE;

D O I：

10.1117/12.908569

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A portable, stand-alone, real-time THz imaging system for high resolution is presented. The total weight of the apparatus is less than 15 kg and its physical dimension is of approximately (65 cm)(3). A quantum cascade laser emitting at 3.4 THz based on a third-order distributed feedback cavity is used as radiation source for transmission and reflection imaging modes. We report real-time THz imaging with a bolometric camera operating at 15 Hz producing movies with a resolution of 120 x 160 pixels. With the help of a Stirling motor cryocooler the laser operates in continuous-wave at 40 K with more than 1 mW output power and less than 300 mW of power consumption. We were able to image small objects employing refractive elements that we manufactured in high density polyethylene achieving a resolution of twice the wavelength.

引用

页数：8

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