Tunable mid-infrared laser sources for trace-gas analysis

Abstract We demonstrate advanced experimental approaches to photoacoustic gas detection with tunable mid-infrared (mid-IR) laser sources of different types. A gas analyzer for registration of various gas components based on a tunable narrow-linewidth optical parametric oscillator (OPO) was designed and investigated. Using this OPO, the possibility of measuring the trace concentration (∼2÷3 ppm) of methane (CH4) in air was experimentally shown. The gas detection capability was enhanced by introducing injection seeding into the OPO. Another gas analyzer was based on a quantum cascade laser (tunable within the range ∼7.6 ÷7.7 μm) and a resonant differential photoacoustic detector. Detection of the ultra-low concentration (∼0.3 ppm) of methane in air was achieved (the standard dispersion was (1σ) ≍ (10–11) ppb with an integration time of 10 s). We compare the presented approaches and outline their further development.

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Acoustic Detection Module Design of a Quartz-Enhanced Photoacoustic Sensor

Sensors ◽

10.3390/s19051093 ◽

2019 ◽

Vol 19 (5) ◽

pp. 1093 ◽

Cited By ~ 3

Author(s):

Tingting Wei ◽

Hongpeng Wu ◽

Lei Dong ◽

Frank Tittel

Keyword(s):

Near Infrared ◽

Tuning Fork ◽

Quartz Tuning Fork ◽

Acoustic Detection ◽

Numerous Application ◽

Mid Infrared ◽

Module Design ◽

Laser Sources ◽

Infrared Laser Sources ◽

Reliability And Robustness

This review aims to discuss the latest advancements of an acoustic detection module (ADM) based on quartz-enhanced photoacoustic spectroscopy (QEPAS). Starting from guidelines for the design of an ADM, the ADM design philosophy is described. This is followed by a review of the earliest standard quartz tuning fork (QTF)-based ADM for laboratory applications. Subsequently, the design of industrial fiber-coupled and free-space ADMs based on a standard QTF for near-infrared and mid-infrared laser sources respectively are described. Furthermore, an overview of the latest development of a QEPAS ADM employing a custom QTF is reported. Numerous application examples of four QEPAS ADMs are described in order to demonstrate their reliability and robustness.

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High-power fiber-laser-pumped mid-infrared laser sources

10.1117/12.689778 ◽

2006 ◽

Cited By ~ 8

Author(s):

Espen Lippert ◽

Stephane Nicolas ◽

Gunnar Arisholm ◽

Knut Stenersen ◽

Asta S. Villanger ◽

...

Keyword(s):

Fiber Laser ◽

High Power ◽

Infrared Laser ◽

Mid Infrared ◽

Laser Sources ◽

Infrared Laser Sources

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Design and fabrication of nonlinear optical waveguides for far-detuned wavelength conversion to the mid-infrared

Advanced Optical Technologies ◽

10.1515/aot-2018-0024 ◽

2018 ◽

Vol 7 (5) ◽

pp. 321-326 ◽

Cited By ~ 2

Author(s):

Martin Rochette

Keyword(s):

Optical Waveguides ◽

Wavelength Conversion ◽

Optically Pumped ◽

Nonlinear Gain ◽

Mid Infrared ◽

Highly Nonlinear ◽

Laser Sources ◽

Infrared Laser Sources ◽

Rare Earth Doped ◽

Gain Media

Abstract Highly nonlinear gain media that are optically pumped by rare-earth doped sources have become a promising approach for the fabrication of all-fiber mid-infrared laser sources. This article focuses on the recent progresses of highly nonlinear chalcogenide microwires as practical gain media for far-detuned wavelength conversion towards the mid-infrared.

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