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Narrowing of electromagnetically induced transparency resonance in a Doppler-broadened medium

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Javan,  Ali
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Lee,  Hwang
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Scully,  Marlan O.
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

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Citation

Javan, A., Kocharovskaya, O., Lee, H., & Scully, M. O. (2002). Narrowing of electromagnetically induced transparency resonance in a Doppler-broadened medium. Physical Review A, 66(1): 013805. 013805. Retrieved from http://link.aps.org/abstract/PRA/v66/e013805.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-C1FA-1
Abstract
We derive an analytic expression for the linewidth of electromagnetically induced transparency (EIT) resonance in a Doppler-broadened system. It is shown here that for relatively low intensity of the driving field the EIT linewidth is proportional to the square root of intensity and is independent of the Doppler width, similar to the laser-induced line narrowing effect described by Feld and Javan. In the limit of high intensity we recover the usual power-broadening case where the EIT linewidth is proportional to the intensity and inversely proportional to the Doppler width.