SBIR Phase II: A Sensitive Integrated Multi-Speckle Laser Interferometer for Industrial Applications

本小型企业创新研究第二阶段项目描述了一种用于工业环境的高灵敏度激光超声接收器的创新开发方法。本文将研制一种高灵敏度的经典参考光束干涉仪，该干涉仪能够有效地克服粗糙表面反射产生的散斑光的限制。干涉仪应该非常适合要求苛刻的工业应用，需要低成本，敏感和坚固的接收器。由于所提出的干涉仪利用了当前电子封装中最先进的高集成度，因此该系统可以制作得非常紧凑，并将成为超声波系统的关键元件。该超声接收器的鲁棒性、高灵敏度和低成本有望使基于激光的超声检测成为一种经济可靠的解决方案。这种类型的激光超声接收器的商业市场是针对过程控制和在役检测应用，这些应用需要高可靠性和低检测成本。钢铁行业已经表达了强烈的愿望，有一个系统，专门用于在过程中的壁厚测量无缝管

This Small Business Innovation Research Phase II project describes an innovative Approach for development of a high sensitivity laser ultrasonic receiver for Application in industrial environment. A high sensitivity classic reference beam interferometer with the ability to efficiently overcome the limitation caused by the speckle light generated from the reflection from rough surface will be developed. The interferometer should be well suited for demanding industrial applications where low cost, sensitive and rugged receiver is needed. Because the proposed interferometer takes advantage of the high integration level of current state-of-the-art in electronic packaging, the system can be made very compact and will be the key element of an ultrasonic system. The robustness, high sensitivity and lower cost of this ultrasonic receiver is hoped to enable laser based ultrasonic inspection to become a cost effective and reliable solution. The commercial market for this type of laser ultrasonic receiver is targeted at process control and in-service inspection applications where high reliability and low inspection cost is required. The steel industry has expressed strongly a desire to have a system dedicated to the in-process wall-thickness measurement of seamless tube