COHERENT BI-COLOR LIGHT SOURCE DEVICE AND COHERENT BI-COLOR LIGHT GENERATION METHOD

摘要

A coherent bi-color light source device comprises an array substrate (10), a first laser tube (11) driven by a direct current signal (I₁) and a second laser tube (12) driven by a modulation signal (I₂) obtained by coupling a microwave signal and a direct current signal. The first laser tube (11) and the second laser tube (12) are fixed on the array substrate (10). A half-wave plate (13), a birefringent crystal (14), a first quarter-wave plate (15), a plane reflector (16) and a second quarter-wave plate (17) are arranged in sequence along an emergence direction of a laser beam emitted by the first laser tube (11). The second laser tube is opposite to the birefringent crystal (14). The coherent bi-color light source device can generate a coherent bi-color light source with linear polarization directions vertical to each other and having high purity, thereby improving quality of a coherent population trapping signal, and further improving stability of an output frequency of a coherent population trapping atomic clock. Also, the coherent bi-color light source device has a simple structure, small volume and low manufacturing cost. A coherent bi-color light generation method is further provided.