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European Quantum Electronics Conference (EQEC)

How to understand the role of the quantum interference in lasing without inversion

Gabriela Wa̧sik, Wojciech Gawlik

Published Aug 24, 2005• 0 citations
Publisher
DOI
10.1109/eqec.1994.698271

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Abstract In terms of quantum interference we demonstrate the physical mechanisms which lead to light amplification without population inversion. The similarities and differences between the two model schemes, namely, A and V-type, are emphasized. A coherent radiation field, on one hand, which drives one of the lasing levels, yields the quantum mechanical two paths via Autler-Townes splittings. On the other hand, the spontaneous emission in this driving transition plays a key role in the asymmetries between the absorption and the stimulated emission in the lasing transition.