Journal
OPTICAL MATERIALS
Volume 112, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2020.110540
Keywords
Nonlinear optics; Z-scan technique; Optical power limiting; Triarylmethane dyes
Categories
Funding
- Laser Centre, Ibnu-Sina Institute for Scientific and Industrial Research (ISI-SIR), Universiti Teknologi Malaysia (UTM)
- Fundamental Research Grant Scheme [R.J130000.7854.5F191]
- UTM Zamalah Scholarship Award by the School of Graduate Studies, UTM
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In this research, the nonlinear refraction and nonlinear absorption of Acid Fuchsin dye solution were measured using Z-scan technique. The results showed that these properties and optical limiting were observed starting from 0.05 mM. The study found that the nonlinear refraction value decreased and the nonlinear absorption value increased as the concentrations of the dye solution increased.
In this research effort, the nonlinear refraction (NLR) and nonlinear absorption (NLA) of Acid Fuchsin dye solution were measured using Z-scan technique. Both properties were measured through the application of open aperture and closed aperture Z-Scan measurements in order to analyse the relationship between different laser input fluences and on four different dye concentrations (0.03 mM, 0.05 mM, 0.10 mM, and 0.20 mM). The results showed that both; NLR, NLA and optical limiting properties were observed starting from 0.05 mM. There is a reduction in terms of its NLR value observed as the concentrations increased with 0.03 mM has the highest value of n2. It is shown that the increment of NLA value is also observed as the concentrations increased. The low optical limiting (OL) threshold is observed around 0.04 W under continuous wave (CW) 532 nm laser beam. This shows that acid fuchsin dye has the capability as an optical limiter in photonics applications.
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