INO
CNR
vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  
 
 

Widely-tunable mid-infrared fiber-coupled quartz-enhanced photoacoustic sensor for environmental monitoring

  Articoli su Riviste JCR/ISI  (anno 2014)

Autori:  Siciliani de Cumis M., Viciani S., Borri S., Patimisco P., Sampaolo A., Scamarcio G., De Natale P., D'Amato F., Spagnolo V

Affiliazione Autori:  CNR - Istituto Nazionale di Ottica (INO) and European Laboratory for Nonlinear Spectroscopy (LENS), Via Carrara 1, 50019 Sesto Fiorentino FI, Italy; Dipartimento Interateneo di Fisica, Università degli Studi di Bari, Politecnico di Bari and CNR Istituto di Fotonica e Nanotecnologie (IFN) UOS Bari, via Amendola 173, 70126 Bari BA, Italy

Riassunto:  A compact widely-tunable fiber-coupled sensor for trace gas detection of hydrogen sulfide (H2S) in the mid infrared is reported. The sensor is based on an external-cavity quantum cascade laser (EC-QCL) tunable between 7.6 and 8.3 mu m wavelengths coupled into a single-mode hollow-core waveguide. Quartz-enhanced photoacoustic spectroscopy has been selected as detecting technique. The fiber coupling system converts the astigmatic beam exiting the laser into a TEM00 mode. During a full laser scan, we observed no misalignment between the optical beam and the tuning fork, thus making our system applicable for multi-gas or broad absorber detections. The sensor has been tested on N-2:H2S gas mixtures. The minimum detectable H2S concentration is 450 ppb in similar to 3 s integration time, which is the best value till now reported in literature for H2S optical sensors. (C) 2014 Optical Society of America

Rivista/Giornale:  OPTICS EXPRESS
Volume n.:  22 (23)      Pagine da: 28222  a: 28231
Ulteriori informazioni:  The authors from CNR-INO gratefully acknowledge the financial support from Regione Toscana, within the frame of POR CReO FESR 2007-2013, Project SIMPAS (Innovative Measurement Systems for the Protection of Environment and Health). The authors from Dipartimento Interateneo di Fisica di Bari acknowledge financial support from three Italian research projects: PON01 02238, PON02 00675 and PON02 00576.
DOI: 10.1364/OE.22.028222

*Impact Factor della Rivista: (2014) 3.488   *Citazioni: 37
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  26/05/2019

Riferimenti visionabili in IsiWeb of Knowledge: (solo per sottoscrittori)
Per visualizzare la scheda dell'articolo su IsiWeb: Clicca qui
Per visualizzare la scheda delle Citazioni dell'articolo su IsiWeb: Clicca qui

INO © Istituto Nazionale di Ottica - Largo Fermi 6, 50125 Firenze | Tel. 05523081 Fax 0552337755 - P.IVA 02118311006     P.E.C.    Info