6533b858fe1ef96bd12b69b7
RESEARCH PRODUCT
Narrow and contrast resonance of increased absorption in Λ-system observed in Rb cell with buffer gas
A. Sargsyan A. Papoyan A. Sarkisyan Yuri Malakyan G. Grigoryan D. Sarkisyan Claude Leroy Y. T. Pashayan-leroysubject
Rb atomic vapor[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph][ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]EIT resonanceatomic transitionEIA resonance[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]42.50.Gy 32.70.Jz 42.62.Fi 42.50.Mddescription
International audience; We report observation of a narrow (sub-natural) and high-contrast resonance of increased absorption (“bright” resonance) in Rb cell with Ne buffer gas under previously unexplored experimental conditions for coupling and probe radiation configuration. The coupling laser-stabilized frequency is detuned by ~3 GHz from 5S1/2, Fg=3 → 5P3/2, Fe=2,3,4 transitions, while the probe laser frequency is scanned across these transitions. We believe the bright resonance formation, occurring when the probe laser frequency is blue-shifted from the coupling frequency by a value of the ground state hyperfine splitting, is caused predominantly by a 2-photon absorption of the probe radiation 5S1/2, Fg=2 → 5S1/2, Fg=3 with 5P3/2 as an intermediate state. We also report and interpret splitting of the bright resonance into 6 well resolved and contrast components in moderate magnetic fields (B ~ 10 ÷ 250 G).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 |