Samad, Fatma Abdel and Mahmoud, Alaa and Abdel-Wahab, M. Sh and Tawfik, Wael Z. and Zakaria, Rozalina and Soma, Venugopal Rao and Mohamed, Tarek (2022) Investigating the influence of ITO thin film thickness on the optical Kerr nonlinearity using ultrashort laser pulses. Journal of the optical society of america b-optical physics, 39 (5). pp. 1388-1399. ISSN 07403224, DOI https://doi.org/10.1364/JOSAB.455414.
Full text not available from this repository.Abstract
In this paper, we present results from the measurements of the optical Kerr nonlinearity of indium tin oxide (ITO) thin films of different thicknesses using the femtosecond (fs) Z-scan technique. ITO thin films were prepared by radio frequency magnetron sputtering on a glass substrate at room temperature. The coated ITO thin films were subsequently characterized by UV-visible absorption spectroscopy, x-ray diffraction, and scanning electron microscopy. Using similar to 100 fs pulses at 80 MHz repetition rate, the optical Kerr nonlinearity in ITO with different thicknesses was investigated at different excitation wavelengths and incident pulse energies. The optical Kerr nonlinearity was found to be dependent on excitation wavelength, incident power, and ITO thickness, with a maximum value of similar to 9 x 10(-12) cm(2)/W at a wavelength of 820 nm, power of 1 W, and 170 nm ITO thickness. These results suggest that Kerr nonlinearity in ITO can be tailored by varying the film thickness, which would be ideal for ultrafast all-optical switching in future optoelectronic devices. (C) 2022 Optica Publishing Group
| Item Type: | Article |
|---|---|
| Funders: | Science and Technology Development Fund |
| Uncontrolled Keywords: | Science and Technology Development Fund; Engineering uncontrolled terms; Engineering main heading |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics T Technology > T Technology (General) |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 05 Oct 2023 06:50 |
| Last Modified: | 05 Oct 2023 06:50 |
| URI: | http://eprints.um.edu.my/id/eprint/42851 |
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