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Proceedings Paper

Non-linear magneto-optical polarization rotation in dark and bright coherent states
Author(s): Z. D. Grujić; M. M. Mijailović; A. J. Krmpot; B. M. Panić; D. V. Pantelić; B. M. Jelenković
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Paper Abstract

We have measured non-linear Faraday effects for dark and bright long-lived Zeeman coherences in the D2 resonance line of 85Rb, for linearly polarized input laser light. Zeeman coherence in the bright state show enhanced nonlinear effects, larger values for the angle of polarization rotation and higher rates of the polarization rotation, similar to recent results for higher refractive index and dispersion in the bright state of Cs 1. Dark and bright states also show different dependence of both polarization rotation angle and of polarization rate on the laser intensity, while the resonance width for both states varies similarly with the laser intensity. We show small enhancement of such non-linear effects when the laser beam diameter increases from 1 mm to 5 mm. Ellipticity of transmitted laser beam vary strongly for amplitudes of the external magnetic field smaller then 50 mG, but the maximum value of the ellipticity remains below &pgr;/300.

Paper Details

Date Published: 5 March 2007
PDF: 5 pages
Proc. SPIE 6604, 14th International School on Quantum Electronics: Laser Physics and Applications, 66040E (5 March 2007); doi: 10.1117/12.726884
Show Author Affiliations
Z. D. Grujić, Univ. of Belgrade (Serbia and Montenegro)
M. M. Mijailović, Univ. of Belgrade (Serbia and Montenegro)
A. J. Krmpot, Univ. of Belgrade (Serbia and Montenegro)
B. M. Panić, Univ. of Belgrade (Serbia and Montenegro)
D. V. Pantelić, Univ. of Belgrade (Serbia and Montenegro)
B. M. Jelenković, Univ. of Belgrade (Serbia and Montenegro)


Published in SPIE Proceedings Vol. 6604:
14th International School on Quantum Electronics: Laser Physics and Applications

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