Vol. 10, issue 11, article # 14

pdf Klimkin V. M., Kolbychev G. V., Kolbycheva P. D. On the possibility of observing the laser effect in the Earth atmosphere. // Atmospheric and oceanic optics. 1997. V. 10. No. 11. P. 836-841.
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The method for analysis of the processes in the upper atmosphere associated with a possibility of obtaining laser effects in it is proposed in the paper. It is found, that in despite of the presence of inverse population of the levels for some transitions in atmospheric gases, the radiation amplification fails to reach the threshold because of the diffraction losses, in none of them under natural conditions. Other prospects of obtaining the laser effect in the upper atmosphere are discussed. It is proposed to pay attention to the low atmosphere (up to 15–20 km), where the laser effect may be feasible under certain conditions.