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Detection of C2H2 and HCl using mid-infrared degenerate four-wave mixing with stable beam alignment: towards practical in situ sensing of trace molecular species

Abstract:

A stable and convenient optical system to realize the forward phase-matching geometry for degenerate four-wave mixing (DFWM) is demonstrated in the mid-infrared spectral region by measuring DFWM signals generated in acetylene (C2H2) and hydrogen chloride (HCl) molecules by probing the fundamental ro-vibrational transitions. IR laser pulses tunable from 2900 cm-1 to 3350 cm-1 with a 0.025 cm-1 linewidth were obtained using a laser system composed of an injection seeded Nd:YAG laser, a dye lase...

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Publication status:
Published

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Publisher copy:
10.1007/s00340-009-3798-z

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
APPLIED PHYSICS B-LASERS AND OPTICS More from this journal
Volume:
98
Issue:
2-3
Pages:
593-600
Publication date:
2010-02-01
DOI:
EISSN:
1432-0649
ISSN:
0946-2171
Language:
English
Pubs id:
pubs:46220
UUID:
uuid:fd566592-bfa5-49a7-961d-58f32b2d8ace
Local pid:
pubs:46220
Source identifiers:
46220
Deposit date:
2012-12-19

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