Michelson Interferometer WSM-PT

Experiment content:
Observe the interference phenomenon of light (equal thickness fringes, equal inclination fringes, white light color fringes).
Measure the wavelength of monochromatic light (standard He-Ne laser). Measure the wavelength of sodium yellow light and the wavelength difference of sodium yellow double line (optional low pressure sodium lamp light source). Measure the coherence length of sodium light (optional low-pressure sodium light source) and observe white light interference fringes (optional parallel white light source).
Instrument features:
Self-built interferometer optical system.
The light path is adjusted by using a precision two-dimensional adjustment frame.
Complete set of equipment:
Optical platform, He-Ne laser (optional low-pressure sodium lamp, parallel white light), beam splitting prism, etc.
Main technical indicators:
The platform size is 480*480mm.
The reading accuracy is 0.0001mm.
Wavelength measurement accuracy: when the fringe count is 100, the relative error of determining the wavelength of monochromatic light is less than 2%.
The splitting prism is 45*45*45mm, the splitting ratio is 50:50, and the flatness of the splitting prism is in/30. | The flatness of the moving mirror and the reference mirror is in/20, and the diameter is Ф = 50mm. Laser output power ≥ 2mw.