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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access April 30, 2011

Amplification of radiation in atomic vapor induced by a linearly polarized laser radiation

  • Marina Movsisyan EMAIL logo , Svetlana Shmavonyan and Aram Papoyan
From the journal Open Physics


We present the results of spectroscopic and polarization studies of dilute rubidium vapor exposed to a single-frequency linearly polarized diode laser radiation in a spectral range of atomic D2 line. We report the origin of a circularly polarized radiation on V-type transitions of 87Rb F g = 2 → F e = 3 and 85Rb F g = 3 → F e = 4, and amplification of this radiation in backward direction caused by a partial population inversion among magnetic sublevels of the ground and excited levels. This is confirmed experimentally by high directivity of backward radiation, absence in its spectrum of 85Rb F g = 2 → F e = 1 (Λ-type) radiation, as well as by different nature of intensity dependences of backward and fluorescence radiations.

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Published Online: 2011-4-30
Published in Print: 2011-8-1

© 2011 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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