BEAM-PROPAGATION BEHAVIOR IN A QUASI-STADIUM LASER-DIODE

The beam propagation behavior of a quasi-stadium laser diode is theore tically investigated. The resonator that we analyzed consists of one f lat end-mirror, one convex curved end-mirror and two straight side wal l mirrors. The cavity dimension is much larger than the oscillation wa velength. We derived one-dimensional Huygen's integral equations for t his laser cavity and carried out eigenmode calculations using the Fox and Li mode calculation method taking into account the effect of the s ide wall reflections and visualized the propagation beams. Unique beam propagation behaviors were obtained. These results well agree with ou r previous experimental results. (C) 1997 Optical Society of America.