Parametric interaction

Canva, M. and Stegeman, G. I. Quadratic Parametric Interactions in Organic Waveguides. Vol. 158,pp. 87-121. 

The optical parametric oscillator (OPO) is based on the parametric interaction of a strong pump wave with a nonlinear medium that has a highly nonlinear susceptibility. 

G. D. Boyd and D.A. Kleinman, Parametric interactions of focused Gaussian light beams. Journal of Applied Physics i9, 3897-3641 (1968). 

Boyd, G. D., and Kleinman, D. A. 1970. Parametric interaction of focused Gaussian light beams. J. Appl. Phys. 39 3597-3639. 

This chapter addresses issues related to quadratic parametric interactions in organic waveguides. It attempts to give an overview of the field, especially emphasizing the initial experimental milestones together with the most recent results. 

In this chapter we deal primarily with experimental results that have been reported dealing with parametric interactions in nonlinear poled polymers, i.e. mostly on second harmonic generation in phase-matched configurations. Because the theoretical analysis associated with these processes has been known for some time and has been independently reviewed many times, we will only briefly overview these basics. Also, the polymeric materials developed for similar applications are reviewed in another section of this book and we refer the reader to that for details. 

The SHG case, in which two photons of the same energy combine into one of twice that energy, is certainly the most experimentally investigated parametric interaction at this time. It is generally studied in the low conversion limit. In the case of a 2D channel waveguide, the second harmonic power P2 may be expressed as a function of the material characteristics, device structure, propagation interaction length L and fundamental input power Px as ... 

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