Magnetic-field effects on molecular transitions in the far-infrared region: prospects for more-sensitive spectrometers

Year: 1999

Authors: Viciani S., De Natale P., Gianfrani L., Inguscio M.

Autors Affiliation: European Laboratory for Nonlinear Spectroscopy, Istituto Nazionale di Fisica della Materia and Department of Physics, Universita` di Firenze, Largo E. Fermi 2, 50125 Florence, Italy;
Istituto Nazionale di Ottica, sezione di Napoli, c/o Dipartimento Scienze Fisiche, Mostra d’Oltremare Padiglione 20, 80125 Naples, Italy;
Dipartimento di Scienze Ambientali della Seconda Universita` di Napoli, Via Arena 22, 81100 Caserta, Italy and Istituto Nazionale di Fisica della Materia, Unita´ di Ricerca di Napoli, Naples Italy

Abstract: We present an experimental investigation of the interaction of highly coherent far-infrared radiation with a paramagnetic gas of NO2 molecules in the presence of magnetic fields. Depending on the characteristics of the magnetic field and on other experimental parameters, we can observe a continuous transition from a Zeeman effect regime to a Faraday (or magnetic rotation) effect regime. The results obtained are compared with theory, and calculations are performed with a view to use of the Faraday effect for more-sensitive spectroscopy in the far-infrared region. (C) 1999 Optical Society of America [S0740-3224(99)01502-7].


Volume: 16 (2)      Pages from: 301  to: 307

KeyWords: Electron transitions; Faraday effect; Frequencies; Frequency modulation; Infrared radiation; Modulation; Molecules; Nitrogen compounds; Numerical methods; Sensitivity analysis; Signal to noise ratio; Spectrometers, Far infrared region; Magnetic rotation spectrometers; Molecular transitions; Sine wave modulated magnetic field; Zeeman modulation effects, Magnetic field effects
DOI: 10.1364/JOSAB.16.000301

Citations: 5
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