Laser Basics

  • Essential elements of a LASER
  • Simplified description of Laser operation
  • Characteristics of Laser light
  • Laser types and parameters
  • Basis for defining Laser beam mode structures

Superposition of Waves

  • Superposition principle
  • Superposition of waves of the same frequency
  • Random/coherent sources
  • Standing waves
  • Group and phase velocities

Interference of light

  • 2-beam interference
  • Young’s double-slit experiment
  • Double slit experiment with virtual sources


  • Interference in dielectric films
  • Newton rings
  • Film thickness measurement by interferometry
  • Experiment 1