Armenian Journal of Physics

NARROW AND CONTRAST RESONANCE OF INCREASED ABSORPTION IN -SYSTEM OBSERVED IN Rb CELL WITH BUFFER GAS

Sargsyan, A. and Papoyan, A. and Sarkisyan, A. and Malakyan, Yu. and Grigoryan, G. and Sarkisyan, D. (2009) NARROW AND CONTRAST RESONANCE OF INCREASED ABSORPTION IN -SYSTEM OBSERVED IN Rb CELL WITH BUFFER GAS. Armenian Journal of Physics, 2 (2). pp. 84-94. ISSN 1829-1171

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Abstract

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).

Item Type:Article
Subjects:Physics > 42.Optics
Physics > 50.Physics of gases, plasmas, and electric discharges
ID Code:131
Deposited By:Prof. Vladimir Aroutiounian
Deposited On:11 Jun 2009 21:11
Last Modified:19 Apr 2011 02:40

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