Pg. Kazansky et al., ERASURE OF THERMALLY POLED 2ND-ORDER NONLINEARITY IN FUSED-SILICA BY ELECTRON IMPLANTATION, Optics letters, 18(14), 1993, pp. 1141-1143
We show that implantation of electrons erases the second-order nonline
arity in thermally poled silica. This technique provides a versatile n
ew means of realizing quasi-phase-matching structures for parametric f
requency conversion in glass optical fibers and planar waveguides.