Simulation of multi-reentrant two-mirror ring cavity lasers

This paper utilizes optical design software ZEMAX to simulate the ring cavity structure. Use two plan-concave lenses to form the cavity structure with one gain medium located off the optical axis. These simulation results are in line with the experiment results. The results, taking the effect of the gain medium into account, are far more accurate than that generated by Beam4. These results help the researchers to have better understanding on the behavior of this type of ring cavity lasers.