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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 22-25 |
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gholami A, rasuli S, Mohammad khazaiy A. Investigating propagation of multiple optical vortices under a plane wave bed. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :22-25
URL: http://opsi.ir/article-1-2717-en.html
URL: http://opsi.ir/article-1-2717-en.html
Abstract: (491 Views)
A light beam whose wave front has a phase singularity and is helical is called a vortex beam. Optical vortices have found many applications in optics. In this work, we consider propagation of a plane wave through a spatial light modulator consisting of one a phase singularity with a topological charge equal to l_{1} located at the center of a square and four phase singularities all having similar topological charges equal to l_{2} located at the corners of the square. Different values are considered for the topological charges l_{1} and l_{2} . Experimental and simulation results show that, if signs of the topological charges at the corners and center of the square are the same, the radius of the central singularity increases and it convolves the other singularities. If their signs are opposite, the total topological charge equals to zero and at the far-filed, we have a plane wave.
Type of Study: Experimental |
Subject:
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