We demonstrate the possibility to perform very high-sensitivity spectroscopy Of CO2 around 4.25 mum wavelength, by use of a difference-frequency radiation source and a White-type multipass absorption cell. Several methods for fringing noise reduction were successfully adopted. In particular, a novel technique to reduce fringes by choosing proper values of the frequency modulation amplitude is described in detail. Pressure-broadening measurements of high-J rovibrational transitions are presented. Achievable laboratory and field sensitivity limits are discussed. (C) 2002 Elsevier Science
High-sensitivity spectroscopy of CO2 around 4.25 µm with difference-frequency radiation
Mazzotti D
;Giusfredi G;Cancio P;De Natale P
2002
Abstract
We demonstrate the possibility to perform very high-sensitivity spectroscopy Of CO2 around 4.25 mum wavelength, by use of a difference-frequency radiation source and a White-type multipass absorption cell. Several methods for fringing noise reduction were successfully adopted. In particular, a novel technique to reduce fringes by choosing proper values of the frequency modulation amplitude is described in detail. Pressure-broadening measurements of high-J rovibrational transitions are presented. Achievable laboratory and field sensitivity limits are discussed. (C) 2002 Elsevier ScienceFile in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
mazzotti02.pdf
solo utenti autorizzati
Descrizione: High-sensitivity spectroscopy of CO2 around 4.25 μm with difference-frequency radiation
Tipologia:
Versione Editoriale (PDF)
Licenza:
NON PUBBLICO - Accesso privato/ristretto
Dimensione
290.27 kB
Formato
Adobe PDF
|
290.27 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
