Acetylene weak bands at 2.5 μm from intracavity Cr2+:ZnSe laser absorption observed with time-resolved Fourier transform spectroscopy

The spectral dynamics of a mid-infrared multimode Cr 2+ :ZnSe laser located in a vacuum sealed chamber containing acetylene at low pressure is analyzed by a stepping-mode high-resolution time-resolved Fourier transform interferometer. Doppler-limited absorption spectra of C 2 H 2 in natural isotopic...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 2006-02, Vol.419 (4-6), p.584-588
Main Authors: Girard, Véronique, Farrenq, Robert, Sorokin, Evgeni, Sorokina, Irina T., Guelachvili, Guy, Picqué, Nathalie
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The spectral dynamics of a mid-infrared multimode Cr 2+ :ZnSe laser located in a vacuum sealed chamber containing acetylene at low pressure is analyzed by a stepping-mode high-resolution time-resolved Fourier transform interferometer. Doppler-limited absorption spectra of C 2 H 2 in natural isotopic abundance are recorded around 4000 cm −1 with kilometric absorption path lengths and sensitivities better than 3 10 −8 cm −1 . Two cold bands are newly identified and assigned to the ν 1 + ν 4 1 and ν 3 + ν 5 1 transitions of 12 C 13 CH 2 . The ν 1 + ν 5 1 band of 12 C 2 HD and fourteen 12 C 2 H 2 bands are observed, among which for the first time ν 2 +2 ν 4 2 + ν 5 −1 .
ISSN:0009-2614
DOI:10.1016/j.cplett.2005.12.029