A theoretical method and an original numerical procedure to calculate the light spectra generated by optical parametric fluorescence (OPF) in a periodically polled medium is presented. This efficient procedure allows us to precisely study the generation in a periodically poled lithium niobate crystal. As an example, the evolution of the OPF spectra as a function of the pump frequency is presented as an animation. Furthermore, we show that OPF spectra can be generated when the pump frequency goes below the degeneracy.

© 2002 Optical Society of America

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Eur. Phys. J. D

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IEEE J. Quantum Electron.

• P.Baldi, et al, �??Modelling and experimental observation of parametric fluorescence in periodically poled lithiulm niobate waveguides,�?? IEEE J. Quantum Electron. 31, 997-1008 (1995). [CrossRef]

Phys. Rev.

• J.A. Armstrong, N. Blombergen, J. Ducuing, and P.S. Pershan, �??Interaction between light waves in a nonlinear dielectric,�?? Phys. Rev. 127, 1918 - 1937 (1962). [CrossRef]

Quantum Electron.

• A.S. Chirkin, V.V. Volkov, G.D. Laptev, E. Yu. Morozov, �??Consecutive three-wave interactions in nonlinear optics of periodically inhomogeneous media,�?? Quantum Electron. 30, 847-858 (2000). [CrossRef]

Other

• A. Rauber, �??Chemistry and physics of lithium niobate�?? in Current topics in Materials Science, edited by E.L.Kaldis, North - Holland Publishing Company, 1978, p.529.
• M.M. Fejer, �??Nonlinear frequency conversion : materials requirement, engineerd materials, and quasi-phasematching�??, in Beam shaping and control with nonlinear optics, edited by F. Kajzar and R. Reinisch, Plenum Press, 1997, p.375-406.

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