LEOI-20 Michelson Interferometer


  • Including He-Ne Laser and Sodium-Tungsten Lamp with Power Supplies
  • Including Air Chamber with Gauge for Refractive Index Measurement of Air
  • Smooth Mirror Movement
  • Precise Measurement
  • Two Micrometers  


The Michelson interferometer is an important instrument in today's physics laboratories and is often the first to be introduced to students for understanding beam interference, an important wave property of light. The Michelson interferometer produces interference fringes by splitting a beam of monochromatic light so that one beam strikes a fixed mirror and the other is incident on a movable mirror. When the reflected beams recombine, an interference pattern is produced. Michelson interferometer can be used for observing interference fringes and precisely measuring wavelength, distance and index of refraction.

Using this instrument, the following experiment examples can be conducted:

  1. Interference fringe observation
  2. Equal-inclination fringe observation
  3. Equal-thickness fringe observation
  4. White-light fringe observation
  5. Wavelength measurement of the Sodium D-lines
  6. Wavelength separation measurement of the Sodium D-lines
  7. Measurement of the refractive index of air

Back to Optics Experiment Instruments products

Infrared (FTIR & IR) Spectroscopy

FTIR, Double Beam IR, Laser Raman, Monochromators and more.

Experimental Instrument Series

Covers interferometers, diffraction and polarization based instruments, laser mode analyzers, instruments for verifying constants and much more.

Education Kit Series

A wide range of physic topics including geometric optics, physical optics, modern optics and information optics.

Light Source Series

Standard laboratory sources such as Sodium and Mercury lamps to specialty sources such as infrared light source.

Opto-mechanics and Optics

For all your opto-mechanics and optics needs, from magnetic base to prisms.

Stage Series & Optic Tables

Translation stages, rotating stages, inclined platforms, motorized translation stages and motion control. Optics breadboards of all sizes and material, accessories.