Standoff detection of explosives with broad band tunable external cavity quantum cascade lasers

被引：5
|
作者：
Fuchs, F. [1 ]
Hugger, S. [1 ]
Kinzer, M. [1 ]
Yang, Q. K. [1 ]
Bronner, W. [1 ]
Aidam, R. [1 ]
Degreif, K. [2 ]
Rademacher, S. [2 ]
Schnuerer, F. [3 ]
Schweikert, W. [3 ]
机构：
[1] Fraunhofer Inst Appl Solid State Phys IAF, Tullastr 72, D-79108 Freiburg, Germany
[2] Fraunhofer Inst Phys Measurement Tech, Freiburg, Germany
[3] Fraunhofer Inst Chem Technol, Freiburg, Germany
来源：
QUANTUM SENSING AND NANOPHOTONIC DEVICES IX | 2012年 / 8268卷
关键词：
HIGH-SENSITIVITY DETECTION;
D O I：
10.1117/12.908119
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present standoff detection of various explosives by backscattering spectroscopy, using a sensing system based on mid-IR external-cavity quantum cascade lasers (EC-QCL) with a broad tunable range of about 300 cm(-1). Traces of TNT (trinitrotoluene), PETN (pentaerythritol tetranitrate) and RDX (cyclotrimethylenetrinitramine) as well as different nonhazardous substances were investigated by illuminating them with the EC-QC laser and collecting the diffusely backscattered light. Tuning the EC-QCL across the characteristic absorption spectra enables us to detect and identify the explosives against a background of non-hazardous materials.
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页数：9
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