- Title
- Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique
- Creator
- Zongo, S
- Creator
- Sanusi, Kayode
- Creator
- Britton, Jonathan
- Creator
- Mthunzi, P
- Creator
- Nyokong, Tebello
- Creator
- Maaza, M
- Creator
- Sahraoui, B
- Date Issued
- 2015
- Date
- 2015
- Type
- Article
- Identifier
- vital:7261
- Identifier
- http://hdl.handle.net/10962/d1020270
- Description
- We have investigated the nonlinear optical properties, including the optical limiting behaviour for five different concentrations of laccaic acid dye in solution and a thin film obtained through doping in poly (methyl methacrylate) (PMMA) polymer. The experiments were performed by using single beam Z-scan technique at 532 nm with 10 ns, 10 Hz Nd:YAG laser pulses excitation. From the open-aperture Z-scan data, we derived that the laccaic dye samples exhibit strong two photon absorption (2PA). The nonlinear refractive index was determined through the closed aperture Z-scan data. The estimated absorption coefficient β2, nonlinear refractive index n2 and second order hyperpolarizability γ were found to be of the order of 10−10 m/W, 10−9 esu and 10−32 esu, respectively. The Z-scan study reveals that the natural laccaic acid dye emerges as a promising material for third order nonlinear optical devices application.
- Description
- Original publication is available at http://dx.doi.org/10.1016/j.optmat.2015.04.031
- Format
- 6 p.
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Zongo, S., Sanusi, K., Britton, J., Mthunzi, P., Nyokong, T., Maaza, M. & Sahraoui, B. 2015. Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique. Optical Materials, 46:270–275. Available: http://dx.doi.org/10.1016/j.optmat.2015.04.031.
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Britton, Jonathan (Dr)
Zondo, Siswe (Mr)
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 03. Good Health and Well-Being