Quartz-enhanced photoacoustic sensors for H2S trace gas detection

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

doi:10.1117/12.2078929

8 February 2015 Quartz-enhanced photoacoustic sensors for H₂S trace gas detection

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

Author Affiliations +

Proceedings Volume 9370, Quantum Sensing and Nanophotonic Devices XII; 93700Y (2015) https://doi.org/10.1117/12.2078929
Event: SPIE OPTO, 2015, San Francisco, California, United States

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^-20cm/mol were selected and QEPAS normalized noise-equivalent absorption in the 10^-10 W•cm^-1•Hz^-1/2 range was achieved..

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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, and Gaetano Scamarcio "Quartz-enhanced photoacoustic sensors for H₂S trace gas detection", Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93700Y (8 February 2015); https://doi.org/10.1117/12.2078929

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