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This article is cited in 12 scientific papers (total in 12 papers)
OPTICS AND NUCLEAR PHYSICS
Features of faraday rotation in Cs atomic vapor in a cell thinner than the wavelength of light
A. Sargsyana, Y. Pashayan-Leroyb, C. Leroyb, Yu. Malakyana, D. Sarkisyana a Institute for Physical Research, National Academy of Sciences of Armenia, Ashtarak-2, 0203, Armenia
b Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 6303-Université de Bourgogne-Dijon, Paris, France
Abstract:
Features of the effect of Faraday rotation (the rotation of the radiation polarization plane) in a magnetic field of the $D_1$ line in Cs atomic vapor in a nanocell with the thickness $L$ varying in the range of $80$–$900$ nm have been analyzed. The key parameter is the ratio $L/\lambda$, where $\lambda=895$ nm is the wavelength of laser radiation resonant with the $D_1$ line. The comparison of the parameters for two selected thicknesses $L=\lambda$ and $\lambda/2$ has revealed an unusual behavior of the Faraday rotation signal: the spectrum of the Faraday rotation signal at $L=\lambda/2=448$ nm is several times narrower than the spectrum of the signal at $L=\lambda$, whereas its amplitude is larger by a factor of about $3$. These differences become more dramatic with an increase in the power of the laser: the amplitude of the Faraday rotation signal at $L=\lambda/2$ increases, whereas the amplitude of the signal at $L=\lambda$ almost vanishes. Such dependences on $L$ are absent in centimeter-length cells. They are inherent only in nanocells. In spite of a small thickness, $L=448$ nm, the Faraday rotation signal is certainly detected at magnetic fields $\ge 0.4$ G, which ensures its application. At thicknesses $L< 150$ nm, the Faraday rotation signal exhibits “redshift”, which is manifestation of the van der Waals effect. The developed theoretical model describes the experiment well.
Received: 27.07.2015
Citation:
A. Sargsyan, Y. Pashayan-Leroy, C. Leroy, Yu. Malakyan, D. Sarkisyan, “Features of faraday rotation in Cs atomic vapor in a cell thinner than the wavelength of light”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:8 (2015), 549–554; JETP Letters, 102:8 (2015), 487–492
Linking options:
https://www.mathnet.ru/eng/jetpl4758 https://www.mathnet.ru/eng/jetpl/v102/i8/p549
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Abstract page: | 179 | Full-text PDF : | 46 | References: | 18 | First page: | 6 |
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