INO
CNR
vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  
 
 

Combining a difference-frequency source with an off-axis high-finesse cavity for trace-gas monitoring around 3 mu m

  Articoli su Riviste JCR/ISI  (anno 2006)

Autori:  Malara P., Maddaloni P., Gagliardi G., De Natale P

Affiliazione Autori:  CNR - Istituto Nazionale di Ottica Applicata and European Laboratory for Non-Linear Spectroscopy (LENS), Comprensorio "A. Olivetti", Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Riassunto:  High-sensitivity spectroscopy of methane around 3 mu m was carried out by means of a 5.5-mW cw difference-frequency generator in conjunction with a high finesse cavity in off-axis alignment. By cavity-output integration a minimum detectable absorption coefficient of 5.7(.)10(-9) cm(-1) Hz(-1/2) was achieved, which compares well with results already reported in the literature. Detection of methane in natural abundance was also performed in ambient air, for different values of total pressure, allowing direct concentration measurements via evaluation of the integrated absorbance of the spectra. In particular, at atmospheric pressure, a minimum detectable concentration of 850 parts per trillion by volume (pptv)(.)Hz(-1/2) was demonstrated. (c) 2006 Optical Society of America.

Rivista/Giornale:  OPTICS EXPRESS
Volume n.:  14 (3)      Pagine da: 1304  a: 1313
DOI: 10.1364/OE.14.001304

*Impact Factor della Rivista: (2006) 4.009   *Citazioni: 28
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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