Abstract
On an example of the D2-line of the Rb atoms the work of the frequency reference of atomic transitions is demonstrated, based on the application of the spectrum of a selective reflectance (SR) from the boundary of atom vapors with the use of nano-cell (NC) with the thickness L ~ λ/2, where λ is the laser wavelength equal to 780 nm. When changing the thickness of the nano-cell near the thickness L ~ λ/2, we observe the inversion of sign of the SR slope profile which is positive when L < λ/2 and negative when L > λ/2. In the case when the incidence angle of the laser beam on the surface of the nano-cell is close to the normal, in real-time it is possible to form the derivative of the SR which represents a resonance peak with ~35 MHz spectral linewidth and located at the atomic transition. The phenomenon of oscillation of the sign of slope while changing the nano-cell thickness from L ~ λ/2 up to L ~ 3/2λ is demonstrated. The practical application of the SR is noted.
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Original Russian Text © A.D. Sargsyan, G.T. Hakhumyan, A.S. Sarkisyan, A.O. Amiryan, D. Sarkisyan, 2016, published in Izvestiya Natsional’noi Akademii Nauk Armenii, Fizika, 2016, Vol. 51, No. 4, pp. 424–436.
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Sargsyan, A.D., Hakhumyan, G.T., Sarkisyan, A.S. et al. Frequency reference for atomic transitions of Rb D2-line based on the effect of selective reflection. J. Contemp. Phys. 51, 312–322 (2016). https://doi.org/10.3103/S1068337216040034
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DOI: https://doi.org/10.3103/S1068337216040034