Experimental analysis of 13CO2 infrared stimulated

Low-Temperature Physics and Chemistry in Cryomatrice

Анотація

Vibrational stimulated emissions of CO₂ trapped in low temperature argon matrices have been found experimentally not only in the 16 mm region (n₂ manifold) but also at 10 mm (n₃ - n₁ transition) in the double trapping site of concentrated samples. A detailed experimental description of these emissions is reported, including spectral analysis, time-resolved studies, laser energy dependence, and concentration and temperature effects. The characteristics of the emissions are discussed, giving some insight into the nonradiative intramolecular V√V transfers from the laser excited level n₃=1 towards the n₂ manifold, and inside this manifold.