Z-scan analytical theory for material with saturable absorption and two-photon absorption
Abstract
By using the Adomian decomposition method, we present the transmitted optical intensity of a nonlinear medium with the concurrence of saturable absorption (SA) and two-photon absorption (TPA) processes. We obtain the analytical expression of the open-aperture Z-scan and investigate the interplay between SA and TPA in the Z-scan trace. Through Z-scan measurements at different levels of laser intensities, both the saturable intensity and TPA coefficient could be obtained quickly yet unambiguously.
- Publication:
-
Optics Communications
- Pub Date:
- September 2010
- DOI:
- 10.1016/j.optcom.2010.05.007
- Bibcode:
- 2010OptCo.283.3525W