Spectroscopic observation of the rotational Doppler effect |
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| Authors: | Barreiro S Tabosa J W R Failache H Lezama A |
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| Institution: | Facultad de Ingeniería, Instituto de Física, C. Postal 30, 11000 Montevideo, Uruguay. |
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| Abstract: | We report on the first spectroscopic observation of the rotational Doppler shift associated with light beams carrying orbital angular momentum. The effect is evidenced as the broadening of a Hanle electromagnetically induced transparency coherence resonance on Rb vapor when the two incident Laguerre-Gaussian laser beams have opposite topological charges. The observations closely agree with theoretical predictions. |
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