Experimental investigation of optical parametric generation enhancement in nonlinear photonic crystal of LiTaO 3
Journal
Journal of Optics (United Kingdom)
Journal Volume
19
Journal Issue
6
Date Issued
2017
Author(s)
Abstract
We investigated angle-resolved optical parametric generation (OPG) in 2D periodically poled lithium tantalate (PPLT) with a 8.52 μm square lattice structure. Substantial parametric gain was observed at two specific incident angles of 0.8° and 1.6°, with the signal/idler wave propagating collinearly/non-collinearly to a 532 nm pump. These phenomena are due to simultaneous quasi-phase-matching OPG processes involved contribution from the reciprocal lattice vectors of (K1,0and K1,1) or (K1,0and K1,2), respectively. These configurations raise the parametric gain to comparable to that of the 1D QPM structure.
Type
journal article