摘要
分析了激光声信号的理论模型。建立了研究不同水深条件下激光声特性的实验平台。研究结果表明：当水体深度在0～100m范围内逐渐增加时，激光声信号的两个相邻主峰时间间距越来越小；激光等离子体声波的峰值声压逐渐减小；空泡首次溃灭声波的峰值声压在0～20m范围内逐渐增加，在20～100m范围内逐渐减小；空泡溃灭声波峰值个数减少。
The theoretical model of laser-induced acoustic signals is analyzed. The experimental platform is built to research characteristic of laser-induced acoustic signals. With the increase of water depth in 0 - 100 m, the time interval of adjacent peak pressures of laser-induced acoustic signals decreases. Peak pressures of acoustic signals induced by laser-plasma decreases. Peak pressures of acoustic signals induced by bubble collapse first increase in 04 20 m, then decrease in 20-100 m. Number of acoustic signals induced by bubble collapse decreases.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2013年第11期8-12,共5页
Chinese Journal of Lasers
基金
国家自然科学基金(51109217
51209210)
装备预研基金(51400010105JB1101)
关键词
激光光学
空化噪声
光致击穿
激光声
laser optics
cavitation noise
laser-induced optical breakdown
laser-induced acoustic signals
