MATLAB Source Code for Computer Simulation of Young's Double-Slit Interference Experiment

Application Background In Young's double-slit laser interference experiment, a laser beam is split by experimental apparatus into two coherent wave sources with identical frequency and constant phase difference. The waves emitted from these coherent sources interfere with each other in space, ultimately forming planar interference patterns on the viewing screen. This phenomenon is based on the principles of optical interference. The following content provides detailed derivations of both 3D interference patterns and partial 2D interference images generated in Young's double-slit laser interference experiment, with MATLAB implementation using wave propagation algorithms and interference calculation functions. Key Technology In Young's double-slit laser interference experiment, the laser beam must be directed perpendicularly between the two slits of the double-slit screen. When the laser passes through these closely spaced slits, diffraction occurs immediately. The diffracted waves superimpose in space to create interference, producing distinct bright and dark fringe patterns on the viewing screen. Since the diffracted waves from the double slits are two sets of spherical waves with identical frequency and phase, interference occurs throughout the illuminated space behind the double-slit screen. The MATLAB simulation models this using numerical diffraction algorithms and wavefront superposition calculations. Overall, Young's double-slit laser interference experiment represents a highly precise experimental technique with broad applications across physics, optics, astronomy, and other fields. Further research and application of this experimental technology is expected to drive technological advancements and innovations, bringing more convenience and benefits to human life. The provided source code demonstrates practical implementation of interference pattern simulation through coordinate system setup, wave equation modeling, and intensity calculation functions.