Detection of dimethyl methylphosphonate (DMMP) with an interband cascade laser sensor

被引：0

作者：

Kim, C. S. ^{[1
]}

Bewley, W. W. ^{[1
]}

Nguyen, V. ^{[1
]}

Kim, M. ^{[2
]}

Canedy, C. L. ^{[1
]}

Meyer, J. R. ^{[1
]}

Kendziora, C. A. ^{[1
]}

McGill, R. A. ^{[1
]}

Vurgaftman, I. ^{[1
]}

机构：

[1] Naval Res Lab, Washington, DC 20375 USA

[2] Jacobs Technol Inc, Hanover, MD 21076 USA

来源：

OPTICS EXPRESS | 2024年 / 32卷 / 10期

关键词：

COMPLIANCE VOLTAGE; SORBENT COATINGS; EXPLOSIVES;

D O I：

10.1364/OE.523299

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the sensitive detection of dimethyl methylphosphonate (DMMP, a hydrogen-bond (HB) basic phosphonate ester) using additional optical loss induced in an interband cascade laser with top optical cladding layer replaced by an exposed sensing window coated by a HB acidic sorbent layer. Thin coatings of the sorbents HCSFA2 and oapBPAF were deposited on the sensing window to allow reversible capture and concentration of DMMP for optical interrogation. Analyte levels down to 0.1 mg/m3 (similar to 20 ppb) were tested and successfully detected by monitoring the laser's threshold or its output power at a fixed bias as a function of DMMP delivery concentration.

引用

页码：17977 / 17987

页数：11

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