 |
|
|
|
| HAL : hal-00370950, version 2 |
| arXiv : 0903.5190 |
| Fiche détaillée |  Récupérer au format |
|
|
| Optics express 17, 14 (2009) 11236 |
|
|
| Versions disponibles : | v1 (30-03-2009) | v2 (23-06-2009) |
|
|
|
|
| Threshold of a random laser based on Raman gain in cold atoms |
|
|
| William Guerin 1Nicolas Mercadier 1 |
|
|
| (06/07/2009) |
|
|
|
| We address the problem of achieving a random laser with a cloud of cold atoms, in which gain and scattering are provided by the same atoms. In this system, the elastic scattering cross-section is related to the complex atomic polarizability. As a consequence, the random laser threshold is expressed as a function of this polarizability, which can be fully determined by spectroscopic measurements. We apply this idea to experimentally evaluate the threshold of a random laser based on Raman gain between non-degenerate Zeeman states and find a critical optical thickness on the order of 200, which is within reach of state-of-the-art cold-atom experiments. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Institut Non Linéaire de Nice Sophia-Antipolis (INLN) |
|
|
|
CNRS : UMR6618 – Université de Nice Sophia Antipolis (UNS) |
|
|
|
|
|
|
|
|
|
| Domaine | : | Physique/Physique/Optique Physique/Physique/Physique Atomique Physique/Matière Condensée/Systèmes désordonnés et réseaux de neurones |
|
|
| Liste des fichiers attachés à ce document : | ||||||||||
|
||||||||||
|
|
|
| hal-00370950, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00370950 | |
| oai:hal.archives-ouvertes.fr:hal-00370950 | |
| Contributeur : William Guerin | |
| Soumis le : Mardi 23 Juin 2009, 10:15:49 | |
| Dernière modification le : Mardi 23 Juin 2009, 11:51:01 | |
