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Proceedings Paper

Conversion between electromagnetically induced absorption and transparency in a four-level system
Author(s): D. Sarkisyan; A. Sargsyan; A. D. Wilson-Gordon; S. Cartaleva
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Paper Abstract

A narrowband R-type resonance is formed in a Λ-system, on the D1 line of Rb atomic vapor using two continuous diode lasers with λ=795 nm. A 8mm- long cell filled with the Rb vapor and 20 Torr neon gas has been used. We have shown that use of an additional (3rd) laser which is resonant with the Rb D2 line (λ=780 nm) makes it possible to control the amplitude and sign of the R -type resonance, i.e. to convert a resonance which demonstrates increase in absorption into one which demonstrates reduction in absorption. The good signal/noise ratio of the observed resonance allows us to follow its behavior in an applied magnetic field from several gauss to several hundred gauss. A description in terms of double-Λ systems allows us to explain the experimental results in a simple manner.

Paper Details

Date Published: 8 January 2015
PDF: 6 pages
Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 944707 (8 January 2015); doi: 10.1117/12.2177887
Show Author Affiliations
D. Sarkisyan, Institute for Physical Research (Armenia)
A. Sargsyan, Institute for Physical Research (Armenia)
A. D. Wilson-Gordon, Bar-Ilan Univ. (Israel)
S. Cartaleva, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 9447:
18th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Alexandros Serafetinides, Editor(s)

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