Noise characterization of a coherent tunable far infrared spectrometer

Anno: 1998

Autori: Viciani S., Marin F., De Natale P.

Affiliazione autori: Department of Physics and European Laboratory for Nonlinear Spectroscopy (LENS), Universita` di Firenze, Largo E. Fermi 2, 50125 Firenze, Italy;
Istituto Nazionale di Ottica sezione di Napoli, c/o Dipartimento di Scienze Fisiche, Mostra d’Oltremare Pad. 19, 80125 Napoli, Italy

Abstract: The different noise contributions in a coherent tunable far infrared spectrometer were measured. On the basis of this quantitative analysis, several experimental schemes to enhance the sensitivity for spectroscopy in this spectral region are proposed. In particular, a full theoretical analysis for differential detection is developed. A double-detector scheme is theoretically analyzed and it is shown that a noise reduction of up to 17 dB is achievable with this configuration. The present work should make possible quantitative forecasting of sensitivity enhancement for new, different experimental configurations. (C) 1998 American Institute of Physics.

Giornale/Rivista: REVIEW OF SCIENTIFIC INSTRUMENTS

Volume: 69 (2)      Da Pagina: 372  A: 376

Parole chiavi: Amplitude modulation; Carbon dioxide lasers; Cathode ray oscilloscopes; Diodes; Frequency modulation; Mirrors; Numerical methods; Optical beam splitters; Piezoelectric transducers; Signal to noise ratio; Spectrum analyzers; Spurious signal noise, Acoustooptic modulator; Electrooptic modulator; Optical noise equivalent power, Infrared spectrometers
DOI: 10.1063/1.1148669

Citazioni: 10
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-03-24
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