Elliptical Acoustic Resonator-Based Dual-Quartz-Enhanced Photoacoustic Spectroscopy Sensing

This paper presents a dual-quartz-enhanced photoacoustic spectroscopy (D-QEPAS) sensor based on an elliptical acoustic resonator (EAR) for the first time. The sensor, leveraging the acoustic focusing characteristics of the EAR and a synchronous detection mechanism with dual quartz tuning forks (QTFs), effectively resolves the low acoustic energy utilization issue in traditional QEPAS systems. Dual QTFs were positioned at the two focal points within the EAR to achieve efficient acoustic energy collection and signal superposition. An EAR theoretical model was established and calculated using the finite element analysis method for performance optimization. With acetylene (C2H2) as the target gas, results…

• HP
  Heilongjiang Postdoctoral Science Foundation

  Awards: LBH-Z23144, LBH-Z24155
• NN
  National Natural Science Foundation of China

  Awards: 62405078, 62275065, 62335006, 62505066, 62022032
• CP
  China Postdoctoral Science Foundation

  Award: 2024M764172
• NS
  Natural Science Foundation of Heilongjiang Province

  Award: LH2024F031
• NS
  Natural Sciences and Engineering Research Council of Canada

  Award: RGPIN-2020-04595