Determining the wavelength of the light of an He-Ne laser using a Michelson interferometer

VP5.3.4.2
Determining the wavelength of the light of an He-Ne laser using a Michelson interferometer
Determining the wavelength of the light of an He-Ne laser using a Michelson interferometer

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Description

In the experiment P5.3.4.2, the wavelength of an He-Ne laser is determined from the change in the interference pattern when moving an interferometer mirror using the shifting distance Δs of the mirror. During this shift, the interference lines on the observation screen move. In evaluation, either the interference maxima or interference minima passing a fixed point on the screen while the plane mirror is shifted are counted. For the wavelength λ, the following equation applies:

Components of equipment sets

1 47340  8  Laser optics base plate LD
1 471830  8  He-Ne Laser, linearly polarised LD
1 473411  8  Laser mount LD
5 473421  8  Optics base LD
1 473432  4  Beam divider, 50 % LD
1 473431  8  Holder for beam divider LD
2 473461  8  Planar mirror with fine adjustment LD
1 473471 Spherical lens, f = 2.7 mm LD
1 47348  8  Fine adjustment mechanism LD
1 44153  8  Screen, translucent LD
1 30011  4  Saddle base LD
1 31102  4  Metal rule, 1 m LD
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