【摘要】 综述了拍频石英增强光声光谱（BF-QEPAS）技术自提出以来的研究进展。首先，阐述了BF-QEPAS技术的基本工作原理以及该技术可行性的实验验证，通过与传统QEPAS技术的对比实验，验证其在响应速度与音叉频率免校准方面的性能突破。其次，从能量增强机制出发，详细分析了光机械能增强与波长扫描增强两种技术路径在提升信号积累效率与系统响应性能方面的作用，并对比了二者的适用场景；进一步介绍了石英增强多外差共振光声光谱技术，探讨了其在大动态范围、宽波段探测方面的潜力以及对BF-QEPAS技术发展的启示。在应用层面，重点剖析了BF-QEPAS在呼气氨无创医疗检测及复杂环境气体监测中的典型案例，并阐述了基于V_BFsignal差分算法的稳态干扰抑制方法，有效提升了信号质量、检测灵敏度、响应速度与系统抗干扰能力，为BF-QEPAS在多领域的广泛应用提供了坚实的技术支撑。最后，展望了该技术在高性能压电材料开发以及系统智能化、集成化等方向的发展应用前景。更多还原

【Abstract】 This paper reviews the research progress in beat frequency quartz-enhanced photoacoustic spectroscopy（BFQEPAS） since its development. Firstly, the fundamental working principle of BF-QEPAS technology is elaborated, and its feasibility is experimentally validated. Comparative experiments with conventional QEPAS demonstrate its performance breakthroughs in response speed and exemption from tuning fork frequency calibration. Secondly, from the perspective of energy enhancement mechanisms, two technical approaches—photo-mechanical energy enhancement and wavelength scanning enhancement—are analyzed in detail regarding their roles in improving signal accumulation efficiency and system response performance, alongside a comparison of their respective application scenarios. Furthermore, the quartz-enhanced multi-heterodyne resonance photoacoustic spectroscopy technique is introduced, exploring its potential for high dynamic range and broadband detection, as well as its implications for the development of BF-QEPAS. On the application front, typical cases of BF-QEPAS in non-invasive medical detection of exhaled ammonia and monitoring of gases in complex environments are examined. The steady-state interference suppression method based on the V_BFsignal differential algorithm is elaborated, which effectively enhances signal quality, detection sensitivity, response speed, and system anti-interference capability, providing solid technical support for the widespread application of BF-QEPAS across various fields. Finally, future development prospects are outlined, including the exploration of high-performance piezoelectric materials and trends towards system intellectualization and integration.更多还原