<title>Pulsed CO overtone laser: theory and experiment</title>

Abstract

Co overtone laser pulses with energy up to 4.4 J and efficiency up to 1 % with completely suppressed lasing in the fundamental band were obtained from mixtures CO:N2 excited by e-beam sustained discharge with duration 1.5 ps. A comprehensive model of this laser was formulated. The results of numerical simulations satisfactorily correlate with experiments. The conditions for obtaining efficiency as high as 20% are predicted.

A database for V–V state-to-state rate constants in N2–N2and N2–CO collisions in a wide temperature range: dynamical calculations and analytical approximations

“…In particular, vibrational energy exchange processes involving atmospheric species, N 2 , O 2 , NO and CO, are of considerable importance for a correct description of the energy balance in the earth's atmosphere and for an understanding of the chemical-physical behaviors 3 Author to whom any correspondence should be addressed. of many other reactive systems used in basic and technological research, including CO/CO 2 gas lasers [1][2][3], low-pressure low-temperature plasma-chemistry reactors [4], atmospheric gases [5] and hypersonic aerodynamics [6,7].…”

“…In particular, the non-resonant V-V exchanges between molecules in their ground vibrational level and molecules in the vibrationally excited levels, N 2 (v = 1) + N 2 (u)/CO(u) → N 2 (v = 0) + N 2 (u + 1)/CO(u + 1), (1) are responsible for the relaxation of the first few low-lying vibrational levels, whereas the relaxation of the v-levels belonging to the plateau region of the vibrational distribution (the so-called Treanor distribution) is largely dominated by the resonant and near-resonant single and multi-quantum V-V exchanges:…”