Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane

H. Y. Clark; L. Corner; W. Denzer; G. Hancock; Andrew Hutchinson; Meez Islam; R. Peverall; G. A.D. Ritchie

doi:10.1016/j.cplett.2004.09.146

Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane

H. Y. Clark
, L. Corner
, W. Denzer
, G. Hancock
, Andrew Hutchinson
, Meez Islam
, R. Peverall
, G. A.D. Ritchie

Teesside University

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

30 Citations (Scopus)

Abstract

Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν ₃ band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon.

Original language	English
Pages (from-to)	102-108
Number of pages	7
Journal	Chemical Physics Letters
Volume	399
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2004.09.146
Publication status	Published - 21 Nov 2004

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10.1016/j.cplett.2004.09.146

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title = "Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane",

abstract = "Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν 3 band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon.",

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AU - Clark, H. Y.

AU - Corner, L.

AU - Denzer, W.

AU - Hancock, G.

AU - Hutchinson, Andrew

AU - Islam, Meez

AU - Peverall, R.

AU - Ritchie, G. A.D.

PY - 2004/11/21

Y1 - 2004/11/21

N2 - Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν 3 band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon.

AB - Continuous wave mid-infrared radiation at 3.36 μm (power ≈ 18 μW) has been produced by difference frequency generation of the fundamental of a YAG laser at 1064 nm (220 mW) with a fibre pigtailed DFB diode laser operating at 1560 nm (50 mW) in periodically poled lithium niobate. The idler radiation has been used to make real-time measurements of ambient methane present in our laboratory using wavelength modulation spectroscopy via the P(4) multiplet transitions within the ν 3 band. We demonstrate a minimum detectable concentration of 47 ppb over a path length of 0.71 m in a 1 s observation time. Measurements of the pressure broadening and shift parameters for these lines are presented for methane in the presence of air, nitrogen and argon.

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DO - 10.1016/j.cplett.2004.09.146

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VL - 399

SP - 102

EP - 108

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane

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