光声光谱（PAS）技术是痕量气体传感领域内十分重要的探测技术, 科研人员正致力于提升光声光谱气体传感技术的性能, 以满足不同的应用需求, 其中通过增强激发光功率来提升探测灵敏度是当前行业内的研究热点, 并已取得了许多突破性进展。介绍了这一重要领域的研究现状, 总结了各类技术手段的工作原理、技术特点以及最新研究成果, 并对其发展趋势进行了分析。

Photoacoutic spectroscopy (PAS) plays an important role in trace gas sensing. Researchers are focusing on improving the performance of PAS-based gas sensors to satisfy different applications. As a promising way to promote the detection sensitivity, power-enhanced PAS has attracted increasing attention in this field with many breakthroughs. This article aims to discuss the status of this important research field, starts from classifying the most used and different technologies to summarizing the fundamental, technical characteristics and current achievements, towards a reasonable development tendency analysis.