Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

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Bibtex

@article{f0e49aa02033490295700a6052ebec26,
title = "Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing",
abstract = "We present a protocol for performing gas spectroscopy using infrared degenerated four-wave mixing (IR-DFWM), for the quantitative detection of gas species in the ppm-to-single-percent range. The main purpose of the method is the spatially resolved detection of low-concentration species, which have no transitions in the visible or near-IR spectral range that could be used for detection. IR-DFWM is a nonintrusive method, which is a great advantage in combustion research, as inserting a probe into a flame can change it drastically. The IR-DFWM is combined with upconversion detection. This detection scheme uses sum-frequency generation to move the IR-DFWM signal from the mid-IR to the near-IR region, to take advantage of the superior noise characteristics of silicon-based detectors. This process also rejects most of the thermal background radiation. The focus of the protocol presented here is on the proper alignment of the IR-DFWM optics and on how to align an intracavity upconversion detection system.",
author = "Pedersen, {Rasmus L.} and Zhongshan Li",
year = "2019",
month = "3",
day = "22",
doi = "10.3791/59040",
language = "English",
journal = "Journal of Visualized Experiments",
issn = "1940-087X",
publisher = "JoVE",
number = "145",

}