Volume 24 -                   ICOP & ICPET _ INPC _ ICOFS 2018, 24 - : 393-396 | Back to browse issues page

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Analyzing moiré pattern for calculating nonlinear refractive index in an Azo dye
Shamim Pirouzfar *1 , Somayeh Salmani1
1- Photonics lab, Department of Physics, Kharazmi University, Tehran, Iran
Abstract:   (3878 Views)

 In this paper, the change of moiré pattern by a nonlinear sample (Disperse Orange 25) has been studied. By analyzing the intensity distribution graph of moiré pattern, in MATLAB software, a microscopic rotation of 0.0017radian was measured respect to linear regime. Furthermore we have calculated the nonlinear refractive index of order for 1mM concentration of sample by this method.

Keywords: Moiré deflectometer, diffraction gratings, Disperse Orange 25, nonlinear refractive index
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Type of Study: Research | Subject: Special
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