Formation of narrow optical resonance by micrometer thin Rb-vapor layer

A. Sargsyan

doi:10.1117/12.752344

9 July 2007 Formation of narrow optical resonance by micrometer thin Rb-vapor layer

A. Sargsyan

Proceedings Volume 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics; 672719 (2007) https://doi.org/10.1117/12.752344
Event: The International Conference on Coherent and Nonlinear Optics, 2007, Minsk, Belarus

Abstract

Recently developed thin cells containing atomic vapor of micrometric column thickness L allow one to study peculiarities of Electromagnetically Induced Transparency (EIT) phenomenon, along with the accompanying velocity selective optical pumping/saturation (VSOP) resonances for the case when < 100 &mgr;m. The micrometric thin cells (MTC) are filled with pure Rb and neither buffer gas nor paraffin-coated walls were used. The Λ-systems on D₂ line of ⁸⁵Rb have been studied experimentally with the use of bi-chromatic radiation of two separate diode lasers (λ≈780 nm, γ_L&≈ 5MHz). It is demonstrated that when L~60 &mgr;m it is still possible to form the EIT resonance with the sub-natural linewidth ~ 5 MHz. The EIT resonance linewidth increases up to 10 MHz , when column thickness L is reduced down to ~ 2 &mgr;m. Six VSOP resonances are detected in the fluorescence and absorption spectra when the thickness L ~ 10 &mgr;m. Dependence of the EIT resonance linewidth as a function of the atomic vapor column thickness L is presented.

Citation Download Citation

A. Sargsyan "Formation of narrow optical resonance by micrometer thin Rb-vapor layer", Proc. SPIE 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics, 672719 (9 July 2007); https://doi.org/10.1117/12.752344

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