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    Koherentno pumpan mikromaser kao maser bez inverzije

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    In this paper, we use microscopic maser theory developed by Filipovicz, Javanaien and Meystre [Phys. Rev. A 34, 3077 (1986)] to investigate the properties of the coherently pumped two-level micromasers. We find that under right conditions, the initial atomic coherence locks the field phase and unlike ordinary lasers and masers there is no longer threshold. Consequently, the population inversion is not necessary.Primijenjujemo mikroskopsku teoriju masera koju su razvili Filipovicz, Javanaien i Meystre [Phys. Rev. A 34, 3077 (1986)] radi istraživanja svojstava koherentno pumpanih dvorazinskih mikromasera. Nalazimo da u povoljnim uvjetima, početna atomska koherencija veže fazu polja, te za razliku od običnih masera i lasera, nemamo praga i stoga inverzija zaposjednutosti nije potrebna
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