Standoff and arms-length detection of chemicals with single-beam coherent anti-Stokes Raman scattering

被引：56

作者：

Li, Haowen ^{[2
]}

Harris, D. Ahmasi ^{[1
]}

Xu, Bingwei ^{[1
]}

Wrzesinski, Paul J. ^{[1
]}

Lozovoy, Vadim V. ^{[1
]}

Dantus, Marcos ^{[1
]}

机构：

[1] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

[2] BioPhoton Solut Inc, Okemos, MI 48864 USA

来源：

APPLIED OPTICS | 2009年 / 48卷 / 04期

关键词：

MULTIPHOTON INTRAPULSE INTERFERENCE; PULSE-COMPRESSION; LASER-PULSE; COMPENSATION; SPECTROSCOPY; GENERATION; LIBS;

D O I：

10.1364/AO.48.000B17

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The detection of chemicals from safe distances is vital in environments with potentially hazardous or explosive threats, where high sensitivity and fast detection speed are needed. Here we demonstrate standoff detection of several solids, liquids, and gases with single-beam coherent anti-Stokes Raman scattering. This approach utilizes a phase coherent ultrabroad-bandwidth femtosecond laser to probe the fundamental vibrations that constitute a molecule's fingerprint. Characteristic Raman lines for several chemicals are successfully obtained from arms-length and 12 m standoff distances. The sensitivity and speed of this approach are also demonstrated. (C) 2008 Optical Society of America

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页码：B17 / B22

页数：6

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