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Investigation of the Fluorescence Spectra of Cs-Vapor Layers with Nanometric Thickness

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Vaseva K., Todorov P., Cartaleva S., Slavov D., Saltiel S.
Acta Physica Polonica A
|
2009
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vol. 116
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issue 4
573-575
EN
The high resolution spectroscopy of nanometric alkali-vapor layers has been made possible through the development of extremely thin cell. We present a detailed comparison of the fluorescence profiles amplitude and width, obtained in the extremely thin cell, both theoretically and experimentally. Experiments are performed on the D_{2} line of Cs-vapor layer with thickness L = mλ, where m = 0.5, 0.75, 1, 1.25. The enhancement rate of the transition profiles width is not growing monotonously, but it is larger for L varying in the interval from L = 0.75 λ to L = λ than that varying in the interval from L = λ to L = 1.25 λ. The used theoretical model, based on the optical Bloch equations is in qualitative agreement with the experimental observations.
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Fluorescence Spectra Study in Extremely Thin Cs-Vapor Layers

86%
Vaseva K., Todorov P., Slavov D., Cartaleva S., Koynov K., Saltiel S.
Acta Physica Polonica A
|
2007
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vol. 112
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issue 5
865-870
EN
The high resolution spectroscopy of nanometric-thin alkali-vapor layers was made possible through the development of extremely thin cell. We have investigated the behavior of the extremely thin cell fluorescence spectra both experimentally and theoretically. Experiment is performed on the D_2 line of Cs-vapor-layer with thickness L=mλ, where m = 0.5, 0.75, 1, 1.25. For open optical transitions, the fluorescence spectra shows narrow dip on the top of the sub-Doppler-width fluorescence profile, at L≥λ. In case of closed transition, an extremely small feature in the fluorescence slightly shifted from its maximum is observed at L =(5/4)λ. The used theoretical model, based on the optical Bloch equations is in qualitative agreement with the experimental observations.
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