15 March 2013 Simultaneous observation of N- and EIT- resonances in 40-micron thin cell filled with Rb and buffer gas
Author Affiliations +
Proceedings Volume 8770, 17th International School on Quantum Electronics: Laser Physics and Applications; 87700K (2013) https://doi.org/10.1117/12.2010673
Event: Seventeenth International School on Quantum Electronics: Laser Physics and Applications, 2012, Nessebar, Bulgaria
Abstract
We report simultaneous observation of the N- and EIT- resonances formation using multi-region (MR) cell, which contains micrometric –thin region with the thickness L varying in the range of 1μm - 90μm. MR cell is filled with natural Rb and 150 Torr neon gas. To form N- and EIT- resonances in Λ-system, two lasers are used: the probe (with tunable frequency), and the coupling (with the fixed frequency) with λ ≈ 795 nm wavelength and 1MHz- line-width. Although, the best parameters of N-resonance could be obtained for a cell thickness about 1cm, the use of MR cell with the thickness 30-40 μm still allows to obtain a good contrast and a narrow line-width. The N-resonance demonstrates subnatural increase of the probe absorption and is formed when probe frequency νP1 is in resonance with the 85Rb transition Fg=2 →5P1/2, while for the coupling frequency the condition υC = υP1 + Δ11=3036 MHz) is fulfilled. The EITresonance is formed when νP2 scans the transition 87Rb, Fg=2 →5P1/2 and for the same coupling frequency the condition υC = υP222=6835 MHz) should fulfill. The frequency separation between N- and EIT-resonances is equal to Δ21≈ 3.8 GHz. We also detected the low-frequency beating signal when the condition υC ≈ νP' is fulfilled, which allows a directly determine the coupling frequency υC. Splitting of N-resonance in the external longitudinal magnetic field into five components is detected. Possible applications are addressed.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Sargsyan, A. Sargsyan, R. Mirzoyan, R. Mirzoyan, S. Cartaleva, S. Cartaleva, D. Sarkisyan, D. Sarkisyan, } "Simultaneous observation of N- and EIT- resonances in 40-micron thin cell filled with Rb and buffer gas", Proc. SPIE 8770, 17th International School on Quantum Electronics: Laser Physics and Applications, 87700K (15 March 2013); doi: 10.1117/12.2010673; https://doi.org/10.1117/12.2010673
PROCEEDINGS
6 PAGES


SHARE
Back to Top