White-light continuum Z-scan technique for nonlinear materials characterization.
We present a technique for rapid characterization of degenerate nonlinear absorption and refraction spectra using a femtosecond white-light continuum (WLC) pulse to perform Z-scans. The spectral components of the WLC source are temporally and spatially dispersed to minimize nondegenerate two-photon absorption (2PA) processes. We demonstrate the validity of the method by measuring the 2PA spectrum of a well-characterized semiconductor, ZnSe.
Balu
Mihaela
M
Hales
Joel
J
Hagan
David
D
Van Stryland
Eric
E