Distributed Feedback Lasing with Cold Atoms

Alexander Schilke, Claus Zimmermann, Ph. W. Courteille +1 more

William Guerin

Brian W J McNeil, Gordon R. M. Robb, R. Bonifacio +1 more

We present a semiclassical analysis of lasing with an injected signal in a system of cold two-level atoms where the effects of atomic recoil are included self-consistently. This analysis predicts that the atoms may bunch under the effects of dipole forces to produce a density grating. This grating produces distributed feedback which can induce lasing action even when the gain of the atomic medium is less than the cavity losses.

Jin‐Hui Wu, M. Artoni, Giuseppe Carlo La Rocca

Elaborating versatile strategies for new lasing schemes is important for both fundamental research and realistic applications. By using atomic photonic crystals, two-color distributed feedback lasing can be shown to occur in a nonlinear regime of balanced optical gain. Within the context of a simple model based on coupled-wave theory and applied to alkali-metal-atom crystals, we find that the two-color lasing threshold in cold atoms is within state-of-the-art experimental reach.

O. V. Astafiev, K. Inomata, A. O. Niskanen +4 more

Quentin Baudouin, Nicolas Mercadier, Vera Guarrera +2 more