Ma. Azarov et al., Influence of the cavity losses on the energy and spectral characteristics of a pulsed chemical chain-reaction HF (DF) laser, QUANTUM EL, 30(1), 2000, pp. 30-36
The dependences of the energy and spectral characteristics of the radiation
of a pulsed photoinitiated chemical chain-reaction HF (DF) laser, operatin
g at atmospheric pressure, on the optical cavity parameters were investigat
ed. The maximum specific output energies of the HF and DF chain lasers (53
and 43 J litre(-1)) and their fullest spectra (47 and 83 lines, respectivel
y) were similar when the unsaturated gain exceeded the threshold by a facto
r greater than 50. An analysis was made of how the energy and spectrum of t
he radiation of the HF (DF) laser were influenced by the spatiotemporal inh
omogeneity of the initiation and of the course of the chemical chain reacti
on. There was a marked effect of the CO2 molecules in the active medium and
in the air filling part of the volume of the complex cavity of the DF lase
r on its efficiency and emission spectrum.