Dynamics of laser buildup from quantum noise
Anno: 1989
Autori: Arecchi F.T., Gadomski W., Meucci R., Roversi J.A.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: We measure the statistical distribution of buildup times for the field of a single-mode C02 laser when cavity losses have rapidly changed from a large to a small value. The ratio between the average buildup time and its statistical spread is shown to be a sensitive test of the quantum fluctuations in the off state. This method operates as a “statistical microscope,” permitting the accurate determination of a small mean photon number in the infrared region by optical amplification, and a discrimination of the initial mean photon number from noise contributions along the amplification process. Following the buildup, the laser pulse decays on two time scales. The faster one, due to the radiation coupling, can be fitted by a Toda oscillator model; the slower one, due to the collisional dynamics of the excited population, provides a quantitative evaluation of two distinct population decay rates, one within the rotational manifold and the other one out of the vibrational band.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 39 (8) Da Pagina: 4004 A: 4015
Parole chiavi: Quantum noise; CO2 laserDOI: 10.1103/PhysRevA.39.4004Citazioni: 46dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti 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