Reduced model for the description of radiation-matter interaction including atomic recoil
Anno: 2003
Autori: Javaloyes J., Lippi GL., Politi A.
Affiliazione autori: Institut Non Linéaire de Nice, UMR 6618 CNRS, Univer. de Nice-Sophia Antipolis 1361 Route des Lucioles, 06560 Valbonne, France;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: We show that a model for the collective atomic recoil laser, previously introduced to include collisions with an external buffer gas, can be reduced to a single dynamical equation for the probe amplitude. This is the result of a clever adiabatic elimination of the atomic variables and of the assumption of a negligible effect of the probe field onto the atomic motion. This reduced model provides a fairly accurate description of the phase diagram of the original set of equations and allows for the investigation of more realistic regimes, where the direct simulation of the full model would be otherwise unfeasible. As a result, we find that the onset of a coherent field can be either described by a second- or first-order transition, the former scenario being observable only below a given temperature. Moreover, the first-order transition is accompanied by an intrinsic optical bistability region.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 68 (3) Da Pagina: 033405-1 A: 033405-13
Parole chiavi: PUMP-PROBE SPECTROSCOPY; GAS LASER AMPLIFIER; VELOCITY-CHANGING COLLISIONS; INDUCED RESONANCES; SPONTANEOUS EMISSIONDOI: 10.1103/PhysRevA.68.033405Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui