Abstract

Chaotic behavior has been studied in recent years. Numerical results and experimental findings in semiconductor lasers with frequency selective feedback caused chaotic emission. In our single longitudinal mode Nd:YLF laser system, we use a Fabry-Perot interferometer to select the frequency, and another Fabry-Perot interferometer is situated between the facet of the active medium and output mirror. Therefore the resonator is a compound cavity. We advance the mathematical model based on internal feedback, phase modulation, and frequency chirping. Numerical simulation indicates that the output intensity is bistable. Furthermore, modulating the feedback parameters causes chaos. In our experiment, we observe the bistability and instability of the intensity output. By reducing feedback, we obtain stable output.

© 1992 Optical Society of America