Abstract

While quadratic solitons had been predicted to exist theoretically and have been observed recently in planar waveguides and bulk quadratic crystals,[1-3] temporal soliton formation, or compensation for the refractive index dispersion by the quadratic nonlinearity, is difficult to be achieved in single path configurations because of the lack of materials with large enough dispersion. In other words, while the nonlinearities can afford parametric gain and phase front distortions, dispersion lengths are in the best case scenarios in the order of 10 cm which are difficult to be achieved experimentally with currently known quadratic materials.[4]

© 1998 Optical Society of America