Conclusion

Interferometry is a measurement technique applied to numerous fields of physics: length, temperatures, pressures, forces, angular speeds and spectroscopy measures. As resolution limits can be very weak, resolution powers are high and so it is a favorite technique in meterology. During “precision” measurements, due to the method considerable sensitivity, we will have to make sure that we take into account every parameter that could have an influence on a measurement such as vibrations and temperature and optical paths stability.

This class has distinguished two different types of interferometers; the wavefront-splitting ones which an essentially historical and educational interest and the amplitude-splitting ones used more often as they are brighter. Most of the latter ones are derivatives from the Michelson interferometer.