Z-scan with arbitrary aperture transmittance: the strongly nonlinear regime
1998; Elsevier BV; Volume: 154; Issue: 4 Linguagem: Inglês
10.1016/s0030-4018(98)00287-9
ISSN1873-0310
AutoresJ.A. Hermann, T. J. McKay, R. McDuff,
Tópico(s)Nonlinear Optical Materials Research
ResumoWe consider theoretical models of nonlinear optical propagation suitable for describing optical Z-scan measurements within the strongly nonlinear regime. In particular, we demonstrate the equivalence of two alternative descriptions of beam propagation from a thin nonlinear refractor, in which the transmission measurements are modelled using a receiving aperture of arbitrary size. If nonlinear absorption is the dominant process, then we predict that a localized peak within the normalized transmittance will appear at the waist position and should be observable if the nonlinear interaction is sufficiently strong.
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