Threshold of a Random Laser with Cold Atoms
- Others:
- Instituto de Ciencia de Materiales de Madrid (ICMM) ; Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)
- Institut Non Linéaire de Nice Sophia-Antipolis (INLN) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)
- Laboratoire Photons Et Matière ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
- ANR-06-BLAN-0096,CAROL,Cold Atoms for Random Optical Laser(2006)
Description
We address the problem of achieving an optical random laser with a cloud of cold atoms, in which gain and scattering are provided by the same atoms. The lasing threshold can be defined using the on-resonance optical thickness b0 as a single critical parameter. We predict the threshold quantitatively, as well as power and frequency of the emitted light, using two different light transport models and the atomic polarizability of a strongly-pumped two-level atom. We find a critical b0 on the order of 300, which is within reach of state-of-the-art cold-atom experiments. Interestingly, we find that random lasing can already occur in a regime of relatively low scattering.
Abstract
Note that Eq. (3) of the published version in PRL contains a misprint. The correct expression is given here.
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-00343356
- URN
- urn:oai:HAL:hal-00343356v4
- Origin repository
- UNICA