摘要
光声光谱分析技术中,高灵敏度的光声传感器仍是其仪器装置的关键所在。不少研究者对此予以极大的重视。本文从理论上分析了液体光声波的传输特性、能量耦合原理。采用复合波导层方式,用国产压电陶瓷设计研制出两种不同结构的液体光声传感器。经实验测定,具有灵敏度高、抗干扰性强和使用方便等特点;适用于液体光声信号检测,尤其是在高低温。
Two different kinds of transducer has been developed. The trnasducers are made of the compound acoustic waveguide materials and the piezoelectric ceramic of lead zirconate-lead titanate(PZT), which has good performances, high sensitivity, wide frequency bandwidth and fast response etc., particularly with respect to the acid, basic solution and high or low temperature as well as the hostile environment samples measurement. The minimum absorption detectable in liquid has been shown to be 10^(-3)cm^(-1) with a cell length of 1 cm and with a pulsed laser of 1 MJ energy. The result is 1 to 2 orders better than that reported in the current literatures.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1990年第2期27-31,共5页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金
