液体中激光等离子体声波声谱特性研究
Spectrum Properties Investigated of Laser-induced Plasma Sound Waves Under Water
李胜勇 1黄高明 1刘晓然 2沈中华 3倪晓武 3陈旗1
作者信息
- 1. 海军工程大学电子工程学院,湖北,武汉,430033
- 2. 海军指挥学院,江苏,南京,211800
- 3. 南京理工大学应用物理系,江苏,南京,210094
- 折叠
摘要
对高功率激光与液体物质作用时产生的等离子体声波声谱特性进行了实验研究.采用压电陶瓷(PZT)水听器测量了不同情况下的激光等离子体声波,对采集的信号经过傅立叶变换(FFT)后得到相应的声谱进行频谱分析.结果表明:激光等离子体声波的频谱分布、峰值频率与激光能量、激光在水下的衰减特性和水下环境无关.
Abstract
The laser-induced plasma sound waves during the high-power laser and matter interaction in liquid are investigated by experiments. By the PZT hydrophone,the laser-induced plasma sound waves at different conditions are measured. And the signals of sound waves are analyzed based on FFT. The investigation results show the distribution of laser-induced plasma spectra and the frequency peak have no relation to the energy of the laser, the attenuatioin properties of the laser underwater and the target underwater.
关键词
激光技术/激光等离子体声波/声谱特性/压电陶瓷(PZT)水听器Key words
laser technique/laser-induced plasma sound waves/property of spectrum/PZT hydrophone引用本文复制引用
基金项目
国家自然科学基金(60578015)
海军青年研究基金(2004)
出版年
2007
NETL
NSTL
维普
万方数据