LITTLE KNOWN FACTS ABOUT PPLN CRYSTAL.

The mechanism for GRIIRA arises from the generation of polarons from crystal defects for instance, Nb ions occupying Li ion sites (referred to as antisite defects), and Fe ion impurities. Doping lithium niobate with MgO reduces the onset of GRIIRA, as it allows Mg ions to switch the Nb antisite defects.PPLN is sweet materials to deliver coherent SF