We discuss an opportunity to achieve amplification without inversion in a three-level cascade scheme using an effective unidirectional pumping via bidirectional incoherent pump. Analytical solution to the population and the coherence are obtained in the steady-state regime. With a proper choice of the parameters, obtained here, the possibility for amplification without inversion is presented.
- X-ray laser
- lasing without inversion
- quantum interference
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics