PL EN


Preferences help
enabled [disable] Abstract
Number of results
2016 | 52 | 57-69
Article title

Study of Nonlinear Optical Properties of Nematic Liquid Crystal Material by Z-Scan Technique

Content
Title variants
Languages of publication
EN
Abstracts
EN
The nonlinear optical properties of nematic liquid crystal material have been studied at different concentrations using Z-Scan technique. Experiments are performed using continuous wave (CW) diode solid state laser at 473 nm wavelength and 20 mW power. The nonlinear absorption coefficient β is calculated using open aperture Z-Scan data, while its nonlinear refractive index n2 is measured using the closed aperture Z-Scan data. In this work, six concentrations were prepared for (Di-Cinnamylidene Benzidine), these concentrations were (9×10-5, 8×10-5, 7×10-5, 6×10-5, 5× 10-5 and 4×10-5)M. The optical absorption and transmission spectra for these concentrations were measured by using UV-VIS spectrophotometer. Our results show that the nonlinearity are changed significantly with concentrations, in addition, the optical limiting behavior has been studied. The results confirmed the capability of the sample to be used as optical limiter device.
Discipline
Year
Volume
52
Pages
57-69
Physical description
Contributors
  • Department of Physics, College of Science, University of Babylon, Babylon, Iraq
  • Department of Physics, College of Science, University of Babylon, Babylon, Iraq
author
References
  • [1] C. Sivaramakrishna, Liquid Crystals, 2nd ed, Cambridge university Press, (1992) pp. 1-16.
  • [2] J. Antal, and S. Alfred, One- And Two-Dimensional Fluids: Physical Properties Of Smectic, Lamellar And Columnar Liquid Crystals, CRC Press, (2006).
  • [3] C. Khoo, Liquid Crystals, Physical Properties and Nonlinear Optical Phenomena, 2nd ed, Wiley, New York. (1995).
  • [4] U. Maheswari, Optical and Dielectric Properties of Liquid Crystals and Liquid Crystals Nanoparticles, M.Sc. Thesis, Anna University of Technology, Coimbatore, India, (2011).
  • [5] J. Mirzaei, Optical and Electro-optical Properties of NematicLiquid Crystals with Nanoparticle Additives, Ph.D. Thesis, University of Manitoba,Winnipeg, Canada. (2015).
  • [6] M. Bahae, A. Said, T. Wei, D. Hagan and E. Van, Sensitive Measurement of Optical Nonlinearities Using A Single Beam, IEEE Journal of Quantum Electronic 26, (1990), pp. 760-769.
  • [7] A. Rodríguez, R. Otega and G. Morales, Impact of Dyes On The Nonlinear Optical Response of Liquid Crystals Implementing The Z-Scan Technique, IOP Publishing, Journal of Physics, Conference Series, (2011), 274,012138.
  • [8] Z. Xiaoqiang, W. Changshun and Y. Zeng, Nonlinear Optical Properties of A Series of Azobenzene Liquid- Crystalline Materials, Journal of Optik 123 (2012) 26-29, China.
  • [9] Z. Fryad, S Patil, Nonlinear Optical Properties and Optical Limiting Measurements of {(1Z)(Dimethylamino)Phenyl]Methylene}4-Nitrobenzocarboxy Hydrazone Monohydrate under CW Laser Regime, Photonics Journal, 4 (2014) 182-188.
  • [10] R. Philip, G. Kumar, N. Sandhyarani, and T. Pradeep, Nonlinear Optical Absorption and Induced Thermal Scattering Studies in Organic and Inorganic Nanostructures, Phys. Rev. B 62 (2000) 13160.
  • [11] Y., Gun and H. Chong, Simple Optical Methods For Measuring Optical Nonlinearitie and Rotational Viscosity In Nematic Liquid Crystals, ISBN 978-953-307- 015-5, (2009) pp. 111-126, Viennna, Austria.
  • [12] Eva U., Measurement of The Nonlinear Refraction Index By Z- Scan Technique, Seminar, 12, (2015), Faculity of Mathematics and Physics, University of Ljubljana
Document Type
article
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.psjd-0aac5ad4-ebfc-4ebf-81b1-681a4454dcc3
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.