title: Approximate effective nonlinear coefficient of second-harmonic generation in KTiOPO(4).
abstract: A simplified approximate expression for the effective nonlinear coefficient of type-II second-harmonicgeneration in KTiOPO(4) was obtained by observing that the difference between the refractive indices n(x) and n(y) is 1 order of magnitude smaller than the difference between n(z) and n(y) (or n(x)). The agreement of this approximate equation with the true definition is good, with a maximum discrepancy of 4%.
authors.forename: K
authors.initials: K
authors.lastname: Asaumi