New Insights into Photoacoustic Spectroscopy and Its Applications
A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Atmospheric Techniques, Instruments, and Modeling".
Deadline for manuscript submissions: 16 May 2025 | Viewed by 579
Special Issue Editors
2. National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China
Interests: absorption spectroscopy; photoacoustic spectroscopy; trace gas detection; atmospheric aerosol; black carbon
Special Issues, Collections and Topics in MDPI journals
Interests: new photoacoustic and photothermal sensing technology; tunable diode laser absorption spectroscopy; development and testing of optoelectronic instruments; trace gas detection; absorption spectroscopy
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Photoacoustic spectroscopy (PAS), as a powerful technique in gas sensing, has attracted more attention and been applied in a broad range of applications, including atmospheric monitoring and industrial process control, due to its advantages of high sensitivity, fast response, good stability, and small gas absorption cell volume. PAS sensors rely on the detection of acoustic signals resulting from the light absorption of a modulated laser radiation by the target species. Various photoacoustic approaches have been developed by using different acoustic transducers including condenser and electret microphones, quartz tuning forks (QTFs), micromachined cantilevers, microelectromechanical systems (MEMSs), etc. Different photoacoustic cell structures have been reported to be capable of improving photoacoustic signal and suppressing noise to further enhance the sensor performance. PAS sensors have one unique advantage—its performance is proportional to the excitation optical power. Many methods have been investigated to build up high optical power in the PAS cell to improve the sensitivity of PAS gas detection. Therefore, various photoacoustic techniques with different acoustic transducers and PAS cell structures have been reported with ultra-high sensitivity of parts-per-trillion. The purpose of this Special Issue is to concentrate on new developments in photoacoustic sensors with novel acoustic transducers, as well as novel PAS cell structures developed for various applications including atmospheric monitoring and industrial process control.
Dr. Gaoxuan Wang
Prof. Dr. Lei Dong
Guest Editors
Manuscript Submission Information
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Keywords
- absorption spectroscopy
- photoacoustic spectroscopy
- trace gas detection
- photoacoustic enhancement
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