Scientific Results

Quartz-Enhanced Photoacoustic sensors for H2S trace gas detection

Year: 2015

Authors: Spagnolo V., Patimisco P., Sampaolo A., Pennetta R., Siciliani de Cumis M., Viciani S., Borri S., De Natale P., D’Amato F., Vitiello M.S., Scamarcio G.

Autors Affiliation: Univ Bari, Dipartimento Interateneo Fis, Bari, Italy;
Politecn Bari, CNR IFN UOS BARI, Bari, Italy;
CNR, Ist Nazl Ott, I-50125 Florence, Italy;
European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy;
CNR, Ist Nanosci, NEST, I-56127 Pisa, Italy;
Scuola Normale Super Pisa, I-56127 Pisa, Italy

Abstract: We report on three different quartz enhanced photoacoustic (QEPAS) sensors operating in the near-IR, mid-IR and THz spectral ranges, employing quartz tuning forks of different sizes and shapes. To test our sensors in the near-IR we used a diode laser working at 2.7 mu m, while in the mid-IR we employed a quantum cascade laser (QCL) operating at 7.9 mu m, fiber-coupled to the QEPAS cell. In the THz range we employed a QCL emitting at 2.91 THz. H2S absorption features with line-strength up to similar to 10(-21) cm/mol were selected and QEPAS normalized noise-equivalent absorption in the 10(-9) W center dot cm(-1)center dot Hz(-1/2) range was achieved..

Conference title:
Place:

KeyWords: Chemical sensors; Gas detectors; Nanophotonics; Quantum cascade lasers; Quartz; Semiconductor lasers, Absorption features; Different sizes; Normalized noise; Photoacoustic sensors; Quartz tuning fork; Quartz-enhanced photoacoustic spectroscopies; Spectral range; Trace gas detection, Photoacoustic spectroscopy

Connecting to view paper tab on IsiWeb: Click here

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more