In-water fiber-optic evanescent wave sensing with quantum cascade lasers

被引：13

作者：

Chevalier, Paul ^{[1
]}

Piccardo, Marco ^{[1
]}

de Naurois, Guy-Mael ^{[1
]}

Gabay, Ilan ^{[1
,2
]}

Katzir, Abraham ^{[2
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Tel Aviv Univ, Sackler Fac Exact Sci, Sch Phys & Astron, Tel Aviv, Israel

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 262卷

关键词：

Fiber-optic evanescent wave spectroscopy; Quantum cascade laser; Silver-halide fiber; Attenuated total reflectance;

D O I：

10.1016/j.snb.2018.01.159

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The ability of detecting harmful chemicals is an important safety requirement for drinking water systems. An apparatus for in-water chemical sensing based on the absorption of evanescent waves generated by a quantum cascade laser array propagating in a silver halide optical fiber immersed into water is demonstrated. We present a theoretical analysis of the sensitivity of the system and experimentally characterize its real-time response and spectroscopic detection for injection of a sample chemical (ethanol) in a tube containing water. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：195 / 199

页数：5

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