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astro-ph2004
Astrophysical Lasers Operating in optical Fe II Lines Lines in Stellar Ejecta of Eta Carinae
S. Johansson, V. S. Letokhov
After the discovery of space masers based on OH radicals (Weaver et al, 1965) and H2O (Cheung et al, 1969) such microwave lasers have been found to work in more than 100 molecular…
astro-ph2002
A Radiative Cycle with Stimulated Emission from Atoms (Ions) in an astrophysical Plasma
S. Johansson, V. S. Letokhov
We propose that a radiative cycle operates in atoms (ions) located in a rarefied gas in the vicinity of a hot star. Besides spontaneous transitions the cycle includes a stimulated…