Abstract
The gain, the refractive index and the noise on the gain are analysed for the case of a weak probe propagating through a medium of driven degenerate Λ three-level atoms. They are all found to have the same linear dependence on the rate of the collisional relaxation rate between the two low-lying states of the Λ three-level system. This indicates that a correlation exists between the gain without inversion, the enhanced refractive index and noise in this system. Furthermore, the maxima in the noise occur at the points of non-absorption in the gain spectrum which are also the extremum points in the refractive index spectrum.
| Original language | English |
|---|---|
| Pages (from-to) | 226-236 |
| Number of pages | 11 |
| Journal | Optics Communications |
| Volume | 113 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 15 Dec 1994 |
Bibliographical note
Funding Information:The research was supported by the Samuel M. Sorefand Helene K. Soref Foundation and by the Israel Science Foundation administered by the Israel Academy of Sciences and Humanities.