Efficient high-harmonic generation in engineered quasi-phase matching gratings

U. K. Sapaev and G. Assanto

Opt. Express 16, 18370-18375 (2008)


We develop an effective numerical algorithm to design engineered quasi-phase-matching gratings in nonlinear crystals for the parametric generation of harmonics of arbitrary order from fundamental frequency input. We demonstrate the method in the case of lithium niobate excited by a continuous-wave source in the regime of pump depletion.