Transition from saturable absorption to reverse saturable absorption of carmoisine dye under low-powered continuous wave laser excitation

• Main Authors: Abdullah, M., Bakhtiar, H., Krishnan, G., Aziz, M. S. A., Danial, W. H., Islam, S.
• Format: Article
• Language: English
• Published: Elsevier Ltd 2019
• Subjects: QC Physics
• Online Access: http://eprints.utm.my/id/eprint/88676/1/HazriBakhtiar2019_TransitionfromSaturableAbsorptiontoReverseSaturableAbsorption.pdf; http://eprints.utm.my/id/eprint/88676/; http://dx.doi.org/10.1016/j.optlastec.2019.01.032

Unique nonlinear optics (NLO) properties i.e. intensity-dependent nonlinear absorption and refraction of carmoisine (food dye) is studied using a single beam z-scan technique. A switchover behavior from a saturable absorption (SA) to reverse saturable absorption (RSA) is observed by increasing conce...