Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

A quantum model for collective recoil lasing

Bonifacio, R. and Cola, M.M. and Piovella, N. and Robb, G.R.M. (2005) A quantum model for collective recoil lasing. EPL: A Letters Journal Exploring the Frontiers of Physics, 69 (1). pp. 55-60. ISSN 0295-5075

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Free Electron Laser (FEL) and Collective Atomic Recoil Laser (CARL) are described by the same model of classical equations for properly defined scaled variables. These equations are extended to the quantum domain describing the particle's motion by a Schrodinger equation coupled to a self-consistent radiation field. The model depends on a single collective parameter (rho;) over bar. which represents the maximum number of photons emitted per particle. We demonstrate that the classical model is recovered in the limit (rho;) over bar much greater than 1, in which the Wigner function associated to the Schrodinger equation obeys to the classical Vlasov equation. On the contrary, for (rho;) over bar less than or equal to 1, a new quantum regime is obtained in which both FELs and CARLs behave as a two-state system coupled to the self-consistent radiation field and described by Maxwell-Bloch equations.