title: Pattern formation without diffraction matching in optical parametric oscillators with a metamaterial.
abstract: We consider a degenerate optical parametric oscillator containing a left-handed material. We show that the inclusion of a left-handed material layer allows for controlling the strength and sign of the diffraction coefficient at either the pump or the signal frequency. Subsequently, we demonstrate the existence of stable dissipative structures without diffraction matching, i.e., without the usual relationship between the diffraction coefficients of the signal and pump fields. Finally, we investigate the size scaling of these light structures with decreasing diffraction strength.
authors.affiliation: Department of Applied Physics and Photonics, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium. philippe.tassin@vub.ac.be
authors.forename: Philippe
authors.initials: P
authors.lastname: Tassin
authors.forename: Guy
authors.initials: G
authors.lastname: Van der Sande
authors.forename: Irina
authors.initials: I
authors.lastname: Veretennicoff
authors.forename: Pascal
authors.initials: P
authors.lastname: Kockaert
authors.forename: Mustapha
authors.initials: M
authors.lastname: Tlidi
mesh_terms: D003198:Computer Simulation; D008027:Light; D008420:Manufactured Materials; D008962:Models, Theoretical; D009991:Oscillometry / Q000379:methods*; D012542:Scattering, Radiation