Noise characterization of a coherent tunable far infrared spectrometer

Year: 1998

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

Autors Affiliation: 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.


Volume: 69 (2)      Pages from: 372  to: 376

KeyWords: 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

Citations: 10
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-05-28
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here