Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection

Isak Silander; Thomas Hausmaninger; Weiguang Ma; Frans J.M. Harren; O. Axner

doi:10.1364/OL.40.000439

Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection

Isak Silander, Thomas Hausmaninger, Weiguang Ma, Frans J.M. Harren, O. Axner

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

26 Citations (Scopus)

Abstract

An optical parametric oscillator based Doppler-broadened (Db) noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS) system suitable for addressing fundamental vibrational transitions in the 3.2–3.9 μm mid-infrared (MIR) region has been realized. An Allan–Werle analysis provides a detection sensitivity of methane of 1.5×10−9 cm−1 with a 20 s integration time, which corresponds to 90 ppt of CH4 if detected at the strongest transition addressed at 40 Torr. This supersedes that of previous Db MIR NICE-OHMS demonstrations and suggests that the technique can be suitable for detection of both the environmentally important CH413 and CH3D isotopologues. It also opens up for detection of many other molecular species at ppt and sub-ppt concentration levels.

Original language	English
Pages (from-to)	439-442
Journal	Optics Letters
Volume	40
Issue number	4
DOIs	https://doi.org/10.1364/OL.40.000439
Publication status	Published - Feb 2015
MoE publication type	A1 Journal article-refereed

Access to Document

10.1364/OL.40.000439

Cite this

@article{ef0df308b1c643f4b1530c05b0c7d096,

title = "Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection",

abstract = "An optical parametric oscillator based Doppler-broadened (Db) noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS) system suitable for addressing fundamental vibrational transitions in the 3.2–3.9 μm mid-infrared (MIR) region has been realized. An Allan–Werle analysis provides a detection sensitivity of methane of 1.5×10−9 cm−1 with a 20 s integration time, which corresponds to 90 ppt of CH4 if detected at the strongest transition addressed at 40 Torr. This supersedes that of previous Db MIR NICE-OHMS demonstrations and suggests that the technique can be suitable for detection of both the environmentally important CH413 and CH3D isotopologues. It also opens up for detection of many other molecular species at ppt and sub-ppt concentration levels.",

author = "Isak Silander and Thomas Hausmaninger and Weiguang Ma and Harren, {Frans J.M.} and O. Axner",

year = "2015",

month = feb,

doi = "10.1364/OL.40.000439",

language = "English",

volume = "40",

pages = "439--442",

journal = "Optics Letters",

issn = "0146-9592",

publisher = "Optica Publishing Group",

number = "4",

}

TY - JOUR

T1 - Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection

AU - Silander, Isak

AU - Hausmaninger, Thomas

AU - Ma, Weiguang

AU - Harren, Frans J.M.

AU - Axner, O.

PY - 2015/2

Y1 - 2015/2

N2 - An optical parametric oscillator based Doppler-broadened (Db) noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS) system suitable for addressing fundamental vibrational transitions in the 3.2–3.9 μm mid-infrared (MIR) region has been realized. An Allan–Werle analysis provides a detection sensitivity of methane of 1.5×10−9 cm−1 with a 20 s integration time, which corresponds to 90 ppt of CH4 if detected at the strongest transition addressed at 40 Torr. This supersedes that of previous Db MIR NICE-OHMS demonstrations and suggests that the technique can be suitable for detection of both the environmentally important CH413 and CH3D isotopologues. It also opens up for detection of many other molecular species at ppt and sub-ppt concentration levels.

AB - An optical parametric oscillator based Doppler-broadened (Db) noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS) system suitable for addressing fundamental vibrational transitions in the 3.2–3.9 μm mid-infrared (MIR) region has been realized. An Allan–Werle analysis provides a detection sensitivity of methane of 1.5×10−9 cm−1 with a 20 s integration time, which corresponds to 90 ppt of CH4 if detected at the strongest transition addressed at 40 Torr. This supersedes that of previous Db MIR NICE-OHMS demonstrations and suggests that the technique can be suitable for detection of both the environmentally important CH413 and CH3D isotopologues. It also opens up for detection of many other molecular species at ppt and sub-ppt concentration levels.

UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84924325703&partnerID=MN8TOARS

U2 - 10.1364/OL.40.000439

DO - 10.1364/OL.40.000439

M3 - Article

SN - 0146-9592

VL - 40

SP - 439

EP - 442

JO - Optics Letters

JF - Optics Letters

IS - 4

ER -

Doppler-broadened mid-infrared noise-immune cavity-enhanced optical heterodyne molecular spectrometry based on an optical parametric oscillator for trace gas detection

Abstract

Access to Document

Other files and links

Fingerprint

Cite this