Experimental Study of Diode Laser Frequency Stabilization by Zeeman Modulation

Firstly we illustrate the necessity of frequency stabilization of semiconductor laser by external modulation, and demonstrate the basic principle of a method which uses Zeeman effect to modulate the frequency of atoms instead of modulating lasers by comparing the differences from the other frequency stabilizing methods. Experimental results show that the quality of this method is as good as the other laser frequency stabilizing techniques. Furthermore, in order to explain the advantage of this Zeeman modulating stabilizing method, we compare the stabilized frequency output of this method with the others. From the comparing results, the superiority of this Zeeman modulating stabilization can be obviously found out.