Diffraction of Coherent Light with Sinusoidal Amplitude by a Thin-Slit Grid

TL;DR

This paper experimentally investigates the diffraction pattern of coherent light with sinusoidal amplitude using a thin-slit grid, demonstrating agreement with theoretical calculations and applications to wire-grid diffraction in the Afshar experiment.

Contribution

It introduces a method to generate sinusoidal amplitude in a coherent light beam and compares experimental results with diffraction theory for thin-slit grids.

Findings

Good agreement between experimental data and diffraction calculations.

Demonstrates the application to wire-grid diffraction in the Afshar experiment.

Validates the use of thin-slit grids for controlled diffraction studies.

Abstract

We report on the experimental findings of a thin-slit grid diffraction of a coherent light beam with sinusoidal amplitude. We create the sinusoidal amplitude by placing a thin-slit grid at the center of the dark fringes of an interference pattern resulting from laser light passing through a dual pinhole. The experimental results show good agreement with diffraction calculations of a thin-slit grid placed at the center of the dark fringes produced by two coherent beams that intersect at small angle. The results are applied to wire-grid diffraction in the Afshar experiment.