Coherently Driven Three-Level Laser with Parametric Amplifier
| dc.contributor.advisor | Kassahun, Fesseha (PhD) | |
| dc.contributor.author | Yirgashewa, Tewodros | |
| dc.date.accessioned | 2018-07-06T11:38:53Z | |
| dc.date.accessioned | 2023-11-09T11:24:55Z | |
| dc.date.available | 2018-07-06T11:38:53Z | |
| dc.date.available | 2023-11-09T11:24:55Z | |
| dc.date.issued | 2010-04 | |
| dc.description.abstract | The squeezing and statistical properties of the light produced by a coherently driven degenerate as well as nondegenerate three-level laser with a parametric amplifier is studied applying c-number Langevin equations. Employing the solutions of these equations, we have determined the quadrature variance for the cavity and output modes, the squeezing spectrum for the output mode(s), the photon statistics of the cavity mode(s), and the photon number and count statistics of the output mode(s). It so turns out that the parametric amplifier increases the squeezing and the mean photon number significantly. Furthermore, it so happens that the coupling of the top and bottom levels enhances the degree of squeezing particularly when there are nearly equal number of atoms initially in the top and bottom levels. It is also found that one effect of the coupling of the top and bottom levels is to decrease the mean and the normally-ordered variance of the photon number. In addition, our calculation shows that the mean photon number of mode a is greater than that of mode b | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/7007 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Parametric Amplifier | en_US |
| dc.title | Coherently Driven Three-Level Laser with Parametric Amplifier | en_US |
| dc.type | Thesis | en_US |