Abstract
Continuous wave lasing without population inversion based on interference of the spontaneous emission is shown to be possible in a closed four-level system coupled with field reservoir, in the absence of any coherent driving fields. Practical implementation of the scheme based on a pseudophotonic band-gap structure doped by three-level ions or semiconductor quantum dots is suggested.
- Received 11 June 2001
DOI:https://doi.org/10.1103/PhysRevA.65.013803
©2001 American Physical Society