Widely tunable 3.4 microm band difference frequency generation using apodized chi(2) grating

Opt Lett. 2007 May 1;32(9):1129-31. doi: 10.1364/ol.32.001129.

Abstract

We achieved apodization in a quasi-phase-matched wavelength converter. The new design yields a large bandwidth and a flat phase-matching response with a high conversion efficiency. Using the method, we demonstrate widely tunable 3.4 microm band difference frequency generation in a LiNbO3 ridge waveguide.