Abstract

Thermally managed Z-scan using a modified chopper was compared to the utilization of a pulse picker with the common calibration material carbon disulfide and then extended to graphene oxide (GO) in different solvents at λ=800  nm. GO in distilled water using femtosecond laser excitation yielded a value of (2.7±.4)×1015  cm2/W for nanometer particles and (1.6±.6)×1015  cm2/W for micrometer-sized particles. Open-aperture Z-scan results using the modified chopper showed no experimental difference.

© 2016 Optical Society of America

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