Theoretical Quantum Optics Group
 at the Weizmann Institute of Science

Recent results:

• Free-Electron Laser without Inversion: Gain Optimization and Implementation Scheme

  A. I. Artemiev, M. V. Fedorov, Yu. V. Rostovtsev, G. Kurizki, and M. O. Scully, Phys. Rev. Lett. 85, 4510 (2000).

  We consider a scheme of two noncollinear wigglers with an intermediate magnetic drift region, constituting a free-electron laser without inversion (FELWI). Two mechanisms of phase shifts in the drift region between the wigglers owing to a series of magnetic lenses can give rise to FELWI: velocity- and angle-dependent shifts. An appropriate combination of these shifts is shown to provide the conditions for amplification without inversion. The phase shifts optimizing the gain are found. A specific scheme for the drift region is suggested.

• Broadband optical gain via interference in the free electron laser: principles and proposed realizations

  Yuri V. Rostovtsev, Gershon Kurizki and Marlan O. Scully, physics/0105044.

  We propose experimentally simplified schemes of an optically dispersive interface region between two coupled free electron lasers (FELs), aimed at achieving a much broader gain bandwidth than in a conventional FEL or a conventional optical klystron composed of two separated FELs. The proposed schemes can universally enhance the gain of FELs, regardless of their design when operated in the short pulsed regime.