Rapid-scanning terahertz precision spectrometer with more than 6 THz spectral coverage.
Opt Express
; 17(25): 22847-54, 2009 Dec 07.
Article
em En
| MEDLINE
| ID: mdl-20052210
ABSTRACT
We report a terahertz time-domain spectrometer with more than 6 THz spectral coverage and 1 GHz resolution based on high-speed asynchronous optical sampling. It operates at 2 kHz scan rate without mechanical delay stage. The frequency error of the system at 60 s acquisition time is determined by comparing a measured water vapor absorption spectrum to data reported in the HITRAN database. The mean error of 87 evaluated absorption lines is 142 MHz.
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Base de dados:
MEDLINE
Assunto principal:
Espectroscopia Terahertz
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article