In contrast to conventional absorption spectroscopy methods, photoacoustic spectroscopy (PAS) measures the absorbed light power directly, which makes the technique highly sensitive and also enables small sample volumes [1]. These properties are important in multicomponent trace-gas analysis, which is possible in PAS using a broadband light source together with a Fourier transform spectrometer (FTS) as a light modulator. A cantilever-enhanced photoacoustic spectroscopy (CEPAS) is a non-resonant photoacoustic technique enabling sensitive detection over a wide range of frequencies [2]. The CEPAS technique together with FTS has so far been used only with conventional infrared radiators, which suffer from poor spectral power density [3].

© 2019 IEEE

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription