Advanced

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

Pedersen, Rasmus L. LU and Li, Zhongshan LU (2019) In Journal of visualized experiments : JoVE
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... (More)

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.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of visualized experiments : JoVE
issue
145
publisher
JoVE
external identifiers
  • scopus:85064528285
ISSN
1940-087X
DOI
10.3791/59040
language
English
LU publication?
yes
id
f0e49aa0-2033-4902-9570-0a6052ebec26
date added to LUP
2019-05-06 09:56:18
date last changed
2019-05-28 03:57:33
@article{f0e49aa0-2033-4902-9570-0a6052ebec26,
  abstract     = {<p>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.</p>},
  author       = {Pedersen, Rasmus L. and Li, Zhongshan},
  issn         = {1940-087X},
  language     = {eng},
  month        = {03},
  number       = {145},
  publisher    = {JoVE},
  series       = {Journal of visualized experiments : JoVE},
  title        = {Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing},
  url          = {http://dx.doi.org/10.3791/59040},
  year         = {2019},
}