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3 2017, 23(9): 89-92 Back to browse issues page
Measurement of Nonlinear Absorption Coefficient of Colloidal Ferro-fluid Nanoparticles Using Parallel Moire′ Deflectometery and Comparison with Z-Scan Method
Hossein Ghasemi 1, Saifollah Rasouli2
1-
2- Assistant Professor
Abstract:   (223 Views)

In this paper we have used parallel moire′ deflectometery in z-scan configuration and z- scan methods to measure nonlinear coefficient of ferrofluid. Values obtained from  two methods are compared. The value of nonlinear coefficient is obtained to be 72×10-3 cm/W in z-scan method. The positive sign illustrate two photon absorption process. The radius of curvature of laser beam and phase changes are extracted and nonlinear coefficient was in good agreement with the value of z-scan method.

Keywords: Talbot effect, Parallel moiré fringes, Laser, Nanoparticles.
Full-Text [PDF 748 kb]   (93 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/04/7 | Accepted: 2017/04/7 | Published: 2017/04/7
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Ghasemi H, Rasouli S. Measurement of Nonlinear Absorption Coefficient of Colloidal Ferro-fluid Nanoparticles Using Parallel Moire′ Deflectometery and Comparison with Z-Scan Method. 3. 2017; 23 (9) :89-92
URL: http://opsi.ir/article-1-1397-en.html
Volume 23, Number 9 (3-2017) Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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