Precision Interferometer

Item Code: SK059

Principle and Working:

This equipment combines the historically important Michelson interferometer, the high resolution Fabry-Perot interferometer and the useful Twyman-Green interferometer.

Measurements are precise in three classical modes of operation. Switching between the three modes of operation and aligning components are very simple, as this complete set of high quality components is carefully mounted on a heavy, stable base.




  • Includes both He-Ne laser and sodium tungsten lamp.
  • Highly stable, Easy operation & Precision optics.
  • Innovative design, with three modes of operation.
  • Numerous supporting accessories.

    Michelson Interferometer

  • Interference fringes observation.
  • Equal thickness interference.
  • Determination of wavelength.
  • Refractive index of transparent slice.
  • Equal inclination interference.
  • White light interference.
  • Precise comparing of wavelengths.
  • Refractive index of air.

    • Fabry-Perot Interferometer

  • Multiple beam Interference
  • Measurement of the wavelength separation of sodium Dlines.
  • Measurement of wavelength of He-Ne laser.

    • Twyman-Green interferometer

  • Demonstration of Twyman-Green interferometer.
  • Flatness of beam splitter & compensator plate : 0.1λ
  • Minimum travel reading : 0.00025mm
  • Travel of moving mirror micrometer: 25mm) : 0.625mm (travel of fine
  • Sodium-tungsten lamp : Sodium: 10W, Tungsten:15W
  • He-Ne laser output : 0.7 ~ 1nW@632.8nm
  • Overall dimension : 350mmx350x245mm
  • Weight : Approx. 15kg
  • 1 Interferometer main frame
  • 1 He-Ne laser
  • 1 Laser holder
  • 1 Ground glass screen
  • 1 Holder for beam expander
  • 1 Extension arm
  • 1 Two-in-One observation screen
  • 1 Transparent slice samples
  • 1 Transparent slice clamp
  • 1 Sodium-Tungsten lamp
  • 1 Air chamber and pump with gauge