Basics of optically pumped astrophysical lasers
Optical (visible and near-IR) astrophysical lasers are pumped by selective photoexcitation performed through a ‘photoexcitation by accidental resonance’ (PAR) process; a process introduced by Kastner and Bhatia. This chapter considers some known examples of PAR and how inversion of population is created by the PAR effect in astrophysical conditions.
Keywords: photoexcitation, accidental resonance, accidental resonance pumping, Bowen accidental resonance, fluorescence lines
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