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一、前言 激光全息照相技术中的干涉量度学目前已成为一种新型高精度的测试方法,在科学技术中获得了广泛的应用。这种方法中的连续曝光全息干涉法或称时间平均法(time-average methor)用于分析物体的振动情况十分有效。这种方法分析精度高,不与样品作机械接触,因此不受样品的材料及形状的限制。当前海洋开发的重要性日益增强,在海洋探测、水下工程、海洋石油勘探与开采、航运和军工等方面水声换能器是重要的设备,而海洋科学的发展对水声换能器也提出了更高的技术要求,因此,研究高效率和
I. Introduction The interferometry in laser holography has now become a new type of high-precision test method and has been widely used in science and technology. The continuous exposure holography method or time-average methor method in this method is very effective for analyzing the vibration of an object. This method of analysis of high precision, not in contact with the sample and therefore not subject to sample material and shape restrictions. The current importance of marine development is increasing. Hydro-acoustic transducers are an important equipment in marine exploration, underwater engineering, offshore oil exploration and exploitation, shipping and military and so on. The development of marine science has also played an important role in underwater acoustic transducers The higher technical requirements are proposed, therefore, the study of high efficiency and