Young’s experiment


Nickel coated SUS 50 μm thick

54552-L red laser diode

Glass diffuser in front of
collimator Illuminating the
entrance pupil of the 20X beam expander

Generalized VCZ theorem application on laser sources with/without diffuser



  • Double slit: 50 μm width, 200 μm separation, 600μm long
  • CCD camera on beam profiler
  • Aspheric lens for Fourier transform f=18.4mm
  • Red laser diode

Simulated Young’s fringe

Oxide Corporation

Speckle contrast Measurement System