Scientific Results

Light-induced drift dynamics in an optically thin regime: Monochromatic and broadband laser excitations

Year: 1989

Authors: Gozzini S., Xu J.H., Gabbanini C., Paffuti G., Moi L.

Autors Affiliation: Istituto di Fisica Atomica e Molecolare del Consiglio Nazionale delle Ricerche, Via del Giardino 7, 56100 Pisa, Italy

Abstract: Light-induced drift (LID) dynamics are studied in uncoated and silane-coated capillaries containing sodium and a few torr of neon or krypton. The adopted coating reduces the adsorption energy of the atoms at the surface of the cell by permitting the observation of wall frictionless LID. Moreover, it can be heated up to 200°C, making it possible to work with saturated vapor over a wide range of densities. A measurement method of the drift velocity is proposed for the optically thin regime, and its dependence on the laser linewidth is observed using both a single-mode and a broadband laser. Drift velocities of up to 30 m/s are measured in a cell containing 6 Torr of krypton under broadband excitation.


Volume: 40 (11)      Pages from: 6349  to: 6353

KeyWords: Light-induced drift (LID); Adsorption energy of the atoms; Single-mode and a broadband laser
DOI: 10.1103/PhysRevA.40.6349

Citations: 17
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