Detection and identification of drugs under real conditions by using noisy terahertz broadband pulse

被引：18

作者：

Trofimov, Vyacheslav A. ^{[1
]}

Varentsova, Svetlana A. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Moscow 119992, Russia

来源：

APPLIED OPTICS | 2016年 / 55卷 / 33期

基金：

俄罗斯科学基金会;

关键词：

IMAGING-SYSTEM; SPECTROSCOPY; SUBSTANCE; EXPLOSIVES; DYNAMICS; CRITERIA;

D O I：

10.1364/AO.55.009605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss an effective method for detecting and identifying drugs using a high-noise terahertz (THz) signal. We add a noisy THz signal obtained in real conditions to the THz signal transmitted through a sample with the illicit drug methamphetamine. The insufficiency of the standard THz time-domain spectroscopy method is demonstrated, showing that this method detects the spectral features of neutral substances and explosives in a noisy THz signal. The method discussed is based upon time-dependent integral correlation criteria calculated using spectral dynamics of the medium response. We propose a modification of the integral correlation criterion that is less dependent on the spectral characteristics of a noisy signal under investigation. (C) 2016 Optical Society of America

引用

页码：9605 / 9618

页数：14

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