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Study of optical and magneto processes in Rb atomic vapor layer of nanometric thickness

Abstract : Using a narrow-band resonant fluorescence spectra from a nano-cell with a thickness of L= [lambda]/2, and VSOP resonances formed at a thickness L =[lambda] ([lambda] is the wavelength of the resonant radiation), for the first time it was experimentally investigated the behaviour of the frequency and intensity (transition probabilities) of the atomic hyperfine structure transitions between the 85Rb, 87Rb, D1 and D2 lines Zeeman sublevels in external magnetic fields in range 5 - 7000G. The behaviour of tens of previously unstudied atomic transitions was analyzed and it is demonstrated that the intensities of these lines can both greatly increase, and decrease (tenfold). For the first time it is demonstrated that, in the case of partial pressure of neon buffer gas up to 6~torr into the nano-cell of thickness L = [lambda] filled with Rb, VSOP resonances are recorded confidently, while the addition of 0.1~torr neon buffer gas in a cell of a centimeter thickness leads to the complete disappearance of VSOP resonances formed with the help of the widely used technique of saturated absorption. It is demonstrated for the first time that the spectral width of the resonant fluorescence spectra of the rubidium nano-cell with thickness L= [lambda]/2, for all values of the neon buffer gas pressures is much narrower (6-8 times) compared with the resonant fluorescence spectra of an ordinary centimeter cell containing rubidium with the same pressures of neon
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Submitted on : Thursday, December 13, 2012 - 5:57:16 PM
Last modification on : Friday, June 8, 2018 - 2:50:14 PM
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  • HAL Id : tel-00764958, version 1



Hrant Hakhumyan. Study of optical and magneto processes in Rb atomic vapor layer of nanometric thickness. Other [cond-mat.other]. Université de Bourgogne, 2012. English. ⟨NNT : 2012DIJOS006⟩. ⟨tel-00764958⟩



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