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Yeganeh M, Alizadeh Irdemusa P, Rasouli S. Optimization of the recording setup for interference gratings by moiré technique. ICOP & ICPET _ INPC _ ICOFS 2018; 24 :461-464
URL: http://opsi.ir/article-1-1551-en.html
1- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran
Abstract:   (1883 Views)
The interference pattern formed by the two-beam interferometry consists a series of parallel lines. The direction and period of these lines, in addition to the angle between the beams and their wavelengths, is also closely related to the wavefront forms of the beams. If at least one of the two wavefronts is not completely plane, a slight difference from the parallel lines pattern is expected. In this study, by examining moiré pattern of the resulting interference pattern with a copy of itself, the characteristics of the wavefronts such their convergence are determined by using reciprocal vectors approach. We show that, with this method one can remove a maximum curvature of the interference fringes of a several hundred meters.
 
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Type of Study: Research | Subject: Special

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