Abstract
By using the Schenzle-Brewer model, in which the ground state of a two-level system also has a finite lifetime, it is shown that two pressure-induced extraresonant degenerate four-wave mixing signals are obtained. The first extra resonance is similar to that predicted and observed by Bogdan et al. [Opt. Lett. 6, 82, 348 (1981)]. It is characterized by a linewidth equal to the inverse lifetime of the upper state and appears only in the presence of collisional redistribution. The second extra resonance is characterized by a linewidth equal to the inverse lifetime of the ground state and does not depend on collisional redistribution for its appearance.
| Original language | English |
|---|---|
| Pages (from-to) | 617-619 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 8 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1983 |