Rosli, M. I. and Aziz, M. S. and Abdullah, M. and Krishnan, G. and Basar, N. and Harun, Sulaiman Wadi and Awang, R. and Omar, F. S. (2023) A comparative analysis of power-dependent nonlinear optical traits in unique `star-type' triphenylmethane chromophores via facile Z-scan measurement. Optical Materials, 135. ISSN 0925-3467, DOI https://doi.org/10.1016/j.optmat.2022.113306.
Full text not available from this repository.Abstract
This study reports the nonlinear optical (NLO) attributes of both nonlinear refraction (NLR) and nonlinear ab-sorption (NLA) for the ``star-type'' chromophores known as Malachite green (MG) and Light green SF yellowish (LGSF). In this research, a Z-scan technique was utilized to carry out the nonlinear procedure. The presence of linear absorptions at 532 nm for both chromophores are the prerequisite for the emergence of NLA phenomenon. The vital intermolecular charge transfer of the it-bonds were evidenced by the vibrational bonds of FTIR analysis spectrum for both chromophores. These bonds were responsible for the appearance of the functional attributes of nonlinearities under the utilized laser power, P. The output signals from open and closed-apertures recorded that MG and LGSF chromophores possesses reverse saturable absorption (RSA) and self-defocusing effect (-n2) in the order of 10-4 cmW-1 and 10-9 cm2W-1, respectively. This indicates a good property of nonlinearity to devel-oped into various optical applications.
| Item Type: | Article |
|---|---|
| Funders: | None |
| Uncontrolled Keywords: | Nonlinear absorption; Nonlinear refraction; Optical limiting; Power-dependent; Z-scan |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Nov 2023 04:05 |
| Last Modified: | 29 Nov 2023 04:05 |
| URI: | http://eprints.um.edu.my/id/eprint/39253 |
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