Rosli, M. I. and Basar, N. and Rozi, N. Mohd and Krishnan, G. and Harun, Sulaiman Wadi and Sazali, E. S. and Aziz, M. S. (2021) The study and comparison of power-dependent nonlinear optical behaviours of alpha-mangostin with Sheik-Bahae formalism and thermal lens model using Z-Scan technique. Journal of Photochemistry and Photobiology A: Chemistry, 407. ISSN 1010-6030, DOI https://doi.org/10.1016/j.jphotochem.2020.113034.
Full text not available from this repository.Abstract
The pericarp of Garcinia mangostana (mangosteen) contains alpha-mangostin (alpha-MG), which is an essential compound derived from the family of xanthone. This study aimed to determine the nonlinear optical response of the extracted alpha-MG using Z-scan technique (532 nm, 0.5-1.0 W). A series of characterisations were also done by using H-1 & C-13 nuclear magnetic resonance (NMR), electron impact mass spectrometry (EIMS), ultraviolet-visible (UV-vis) and Fourier transform infrared (FTIR) to validate the identity of the extracted alpha-MG. The results showed that only nonlinear refraction (NLR) was successfully captured and measured by the closed-aperture signal. The localized absorption across the media enabled the alpha-MG to exhibit a self-defocusing effect. The recorded values of the nonlinear refractive index, which were denoted as n(2), were then compared with two different theoretical fitting curves, which were Sheikh-Bahae Formalism (SBF) and Thermal Lens Model (TLM). The values of n(2) obtained were in the order of 10(-9) and 10(-10) for SBF and TLM, respectively. The NLO characteristics of the alpha-MG were observed at the excitation wavelength of 532 nm.
| Item Type: | Article |
|---|---|
| Funders: | Malaysia Fundamental Research Grant Scheme [R.J130000.7854.5F191] |
| Uncontrolled Keywords: | Nonlinear refraction; Synthesised alpha-mangostin; Sheik-Bahae formalism; Thermal lens model; Z-scan |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 22 Aug 2022 05:01 |
| Last Modified: | 22 Aug 2022 05:01 |
| URI: | http://eprints.um.edu.my/id/eprint/28842 |
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