Experiment: Fabry-Pérot Interferometer, Determination of the Bohr Magneton
 
Note: This setup can also be used to perform the experiment "Normal Zeeman Effect" (UE5020850). Additionally, the experiment can be expanded with a bandpass filter and a second Fabry-Pérot etalon to conduct the experiment "Anomalous Zeeman Effect, Hyperfine Structure" (UE5020800).
  
This experiment introduces the Fabry-Pérot interferometer using the example of the normal Zeeman effect.
A Fabry-Pérot interferometer is an optical resonator consisting of two plane-parallel, partially reflective mirrors with high reflectivity and an enclosed optical medium. When the mirrors are at a fixed distance, the setup is also referred to as a Fabry-Pérot etalon. Due to multiple beam interference, etalons have a very high resolving power.
Through the theoretical introduction to the Fabry-Pérot etalon and the investigation of the interference rings depending on the magnetic field, the value of the Bohr magneton is determined experimentally.