Journal of Modern Optics

High-contrast dark resonances on the D1 line in cesium nanocell: the advantages compared with the other alkali D lines

Armen D. Sargsyan, Claude Leroy, Y. Pashayan-Leroy, S. Cartaleva, David G. Sarkisyan

Published Feb 10, 2015• 15 citations

Abstract

Electromagnetically induced transparency (EIT) effect in a -system formed by Cs atoms line, enclosed in nanometric-thin cells, is studied both experimentally and theoretically for the first time. The atomic column thickness varies in the range of 50–1500 nm. It is demonstrated that when the coupling laser frequency is in exact resonance with the corresponding atomic transition, the parameters of the EIT resonance (also called dark resonance (DR)) depend weakly on , which allows us to detect DR at nm with the contrast of . The obtained DR parameters are the best as compared with those for Rb and lines and Cs line. The DR contrast and width are studied versus laser frequency detunings, coupling laser power, cell thickness, temperature, and applied external magnetic field. The well-resolved splitting of the DR resonance in a magnetic field for nm can be used for magnetometry with high spatial resolution. The theoretical model describes well the observed results.

DOI: 10.1080/09500340.2015.1006699

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