双探头光声效应的特性研究  

Characteristic of double-probe photoacoustic effect

作　　者：黄楚彬[1] 欧子瑜[1] 杨初平[1] 

机构地区：[1]华南农业大学应用物理系,广东广州510642

出　　处：《物理实验》2015年第8期28-32,共5页Physics Experimentation

基　　金：华南农业大学省级大学生创新创业训练计划项目(No.1056413040)

摘　　要：为了提高光声效应的检测灵敏度,设计了双探头光声实验系统,并测试了该系统的频率响应和幅度响应特性.实验结果显示双探头光声实验系统能够有效提高信号检测的灵敏度.另外,双探头光声池可以作为信号源,产生2个具有一定相位差的同频率信号,从而演示这2个信号的叠加.In order to improve the sensitivity in photoacoustic detection, a double-probe photoa- coustic experiment system was presented. The frequency and amplitude response of the system were tested. The experimental results showed that the sensitivity was increased in this experiment system. The double-probe photoacoustic cell could also be used as a signal source to create two sinusoidal sig- nals with same frequency but different phases.

关 键 词：光声效应 双探头 频率响应 幅度响应 

分 类 号：O437[机械工程—光学工程]