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- Photoacoustic signal is induced through thermal expansion of the locally heated area by incident laser pulse. 另一方面，光声效应产生讯号的机制是物质吸收光学能量后产生热膨胀效应。
- The optical fiber phase sensor is used to replace the traditional microphone to detect photoacoustic signal. 提出用光纤相位传感器代替传统的微音器检测光声信号。
- It has put forward a imaging method of acoustic lens using photoacoustic signal and according to the Kirchhoff diffraction theory we deduce. 主要内容：1．光声信号声透镜层析成像方法的提出，并依基耳霍夫衍射理论推导了声透镜的脉冲响应。
- The frequency of photoacoustic signal generated in biological tissue is relatively low, and the main frequencies of photoacoustic sign& are determined by the properties of biological tissue. 光声信号的频率较低，主频由生物组织特性决定；
- It is found that the difference of the characteristics of photoacoustic signals in time domain and in frequency domain between various tissues is very obvious. 结果表明：不同生物组织产生的光声信号的时域和频域特徵均存在明显的差异；
- Abstract: Laser ablation of pure copper was investigated using photoacoustic signals excited in surrounding air when a pulsed-laser beam impinges a metallic surface. 文章摘要: 利用脉冲激光束轰击金属样品表面时在周围空气中激发的光声信号研究了纯铜的激光烧蚀。
- Cross-correlation operation and chaotic detection are introduced,based on which a method integrating these two theories to detect weak photoacoustic signals is proposed. 在分别对互相关运算和混沌检测进行分析说明的基础上将这2种方法结合起来作为微弱光声信号检测的理论依据。
- The pulsed-laser ablation threshold of pure copper was determined according to the variation of the time-of-flight （TOF） of photoacoustic signals with the laser energy. 文中还给出了一种理论估计脉冲激光烧蚀阈值的较为实用的方法。
- It has been shown that the method of TOF of photoacoustic signals is reliable and simple for determining pulsed-laser ablation threshold of pure copper. 结果表明，光声信号方法是测定纯铜的脉冲激光烧蚀阈值的一种简单可行的方法。
- The ion effect for photoacoustic absorption measurement in solution is investigated. At 532nm the photoacoustic signals of Co~(2+)and monocrystalline silicon were determincd in 16 kinds of electrolyte solution. 在532nm(YAG倍频激光)波长下,分别以CO~(2+)和单晶硅片为吸光介质测定了在16种电解质存在下,溶液光声信号强度变化。
- STUDIES ON ACOUSTIC LENS IMAGING OF PHOTOACOUSTIC SIGNAL 光声傅里叶变换成像理论
- Keywords photoacoustic signal;solution concentration;linear; 光声信号;溶液浓度;线性;
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- In The Photoacoustic Spectrum Technology Modulation Frequency To The Photoacoustic Signal Influence Research 光声光谱技术中斩光频率对光声信号影响的研究
- I stood watching for the signal to change to green. 我站着等待交通信号转为绿灯。
- Let's set the clock by the radio time signal. 咱们照着收音机的报时信号把钟对一对。
- A red lamp is often a danger signal. 红灯常常是危险的信号。
- A reflected signal on a communication channel. 一种在通信信道上反射回来的信号。
- The rise in prices was a signal for rebellion. 物价上涨引起了叛乱。
- A channel over which pilot signal is transmitted. 可在其上传输导频信号的一种信道。
