Residual pulse peak reduction in stimulated Brillouin scattering optical limiting by an injected seed

摘要

A new method to reduce the residual pulse peak in stimulated Brillouin scattering (SBS) optical limiting by an injected seed is presented. The pulse shapes of the transmitted pump beam are studied for various delay limes and injected seed powers theoretically. The numerical simulated results show that the height of the residual pulse peak can be controlled by changing the delay lime and injected seed intensity. Experimentally, various optical limiting pulse shapes with different heights of the residual peak are observed by changing the delay time and intensity of the seed injected into the SBS optical limiler. The experimental and theoretical results show that the residual pulse peak in SBS optical limiting can be controlled by the delay time and power of an injected seed.