IMPLEMENTATION OF A WAVEFRONT-SENSING ALGORITHM WITH TWO-CHANNEL MOIRÉ DEFLECTOMETRY AND MATLAB GRAPHIC USER INTERFACE
M. Dashti1, S. Rasouli2,3
1Islamic Azad University, Zanjan, Iran
2Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
3Optics Research Center, Zanjan, Iran
Keywords: Wavefront sensor, MATLAB program, Moiré fringes, Wavefront aberrations
Abstract
Experimental setups of a two-channel wavefront sensor (WFS) based on moiré deflectometry have been proposed and developed in recent years. The capabilities of this WFS have been tested in the atmospheric turbulence measurements. Like other WFSs, it can be used in various areas. Therefore, we have developed a MATLAB graphical user interface program to allow any user to easily make use it. This program takes simultaneous horizontal and vertical moiré patterns as input data and reconstructs the corresponding wavefront map and its aberration values. The algorithm of the process is explained step by step in this paper. For a typical input moiré pattern, the results such as the wavefront shape and corresponding first ten Zernike coefficients are calculated and are shown as outputs of the software. In addition, there is a special part in the program for atmospheric turbulence applications that calculates the strength amount of the turbulence, Cn2 and the temporal evolution of the angle of arrival.
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