Investigation on the effect of beam divergence angle upon output waveform based on stimulated Brillouin scattering optical limiting

• 来源期刊: 中国物理B（英文版）
• 关键词: stimulated Brillouin scattering optical limiting waveform beam divergence angle
• 年，卷（期）: 2009,（7）
• 页码范围: 2835-2838
• 页数: 4页
• 语种: 英文

摘要

This paper investigates the effect of beam divergence angle on output waveform based on stimulated Brillouin scattering optical limiting. Output waveforms in the case of different pump divergence angles are numerically simulated,and validated in a Nd:YAG seed-injected laser system. The results indicate that a small pump divergence angle can lead to good interaction between pump and Stokes, and a platform can be easily realized in the transmitted waveform.In contrast, a peak followed by the platform appears when the divergence angle becomes large.