摘要
研究液体中声吸收对三种具有不同波形的脉冲光声信号的影响，把吸声介质视为一个线性、时空不变的低通滤波器，得到了考虑声吸收后光声脉冲的幅值和波形随传播距离变化的表达式。
The effects of sound absorption on three kinds of photoacoustic pulses with different waveforms in liquids are investigated. The sound absorption medium is represented as a linear, time-invariant, space-invariant low-pass filter. The expression for the variations of the amplitudes and waveforms of photoacoustic pulses with propagation distance due to sound absorption are given.
基金
国家自然科学基金!19174027
关键词
液体
声吸收
脉冲光声信号
波形
海水
海洋声学
Sound absorption in liquids
photoacoustic pulses
thermal expansion
surface vaporization
laser-induced breakdown
