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Proceedings Paper

Quartz-enhanced photoacoustic sensors for H2S trace gas detection
Author(s): Vincenzo Spagnolo; Pietro Patimisco; Angelo Sampaolo; Riccardo Pennetta; Mario Siciliani de Cumis; Silvia Viciani; Simone Borri; Paolo De Natale; Francesco D'Amato; Miriam S. Vitiello; Gaetano Scamarcio
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Paper 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 μm, while in the mid-IR we employed a quantum cascade laser (QCL) operating at 7.9 μm, fiber-coupled to the QEPAS cell. In the THz range we employed a QCL emitting at 2.95 THz. H2S absorption features with line-strength up to 10-20 cm/mol were selected and QEPAS normalized noise-equivalent absorption in the 10-10 W•cm-1•Hz-1/2 range was achieved..

Paper Details

Date Published: 8 February 2015
PDF: 8 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93700Y (8 February 2015); doi: 10.1117/12.2078929
Show Author Affiliations
Vincenzo Spagnolo, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Pietro Patimisco, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Angelo Sampaolo, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Riccardo Pennetta, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Mario Siciliani de Cumis, Istituto Nazionale di Ottica, CNR (Italy)
European Lab. for Non-linear Spectroscopy (Italy)
Silvia Viciani, Istituto Nazionale di Ottica, CNR (Italy)
European Lab. for Non-linear Spectroscopy (Italy)
Simone Borri, Istituto Nazionale di Ottica, CNR (Italy)
European Lab. for Non-linear Spectroscopy (Italy)
Paolo De Natale, Istituto Nazionale di Ottica, CNR (Italy)
European Lab. for Non-linear Spectroscopy (Italy)
Francesco D'Amato, Istituto Nazionale di Ottica, CNR (Italy)
Miriam S. Vitiello, NEST, Istituto Nanoscienze, CNR, Scuola Normale Superiore (Italy)
Gaetano Scamarcio, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)


Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

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