Scientific Results

Spin randomization of light-induced desorbed Rb atoms

Year: 2014

Authors: Dancheva Y., Marinelli C., Mariotti E., Gozzini S., Marmugi L., Zampelli M.R., Moi L., Ghosh P.N., Gateva S., Krasteva A., Cartaleva S.

Autors Affiliation: CNISM and Department of Physical, Earth and Environmental Sciences University of Siena, Via Roma 56, 53100 Siena, Italy; Istituto Nazionale di Ottica CNR, UOS “A.Gozzini”, Via Moruzzi 1, 56124 Pisa, Italy; Department of Physics, University of Calcutta, 92APC Road, 700 009 Kolkata, India; Acad. E. Djakov Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria

Abstract: We present the first experimental observation of atomic spin randomization of Rb atoms released by light-induced atomic desorption (LIAD). A natural mixture of Rb atoms contained in paraffin and PDMS coated glass cells is irradiated by a free-running diode laser light tuned to the Rb D2 resonance line. The transmission spectrum of the Rb vapor is thus modified and shows a strong enhancement of the hyperfine optical pumping as the light intensity is increased and the laser-frequency scanning rate is decreased. The D-2 line spectra are compared for two cases: without and with illumination of the walls of the cell by a UV lamp centered around the wavelength of 404 nm. A simple theoretical model based on the solution of the rate balance equations is introduced in order to analyze the experimental results.

Journal/Review: JOURNAL OF PHYSICS. CONFERENCE SERIES

Volume: 514      Pages from: 012029  to: 012029

KeyWords: Atomic spins; Light-induced atomic desorption; Anti-relaxation coatings
DOI: 10.1088/1742-6596/514/1/012029

Citations: 4
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English