Wavelength mismatch effect in electromagnetically induced absorption

Abstract

We present a theoretical investigation of the phenomenon of electromagnetically induced absorption (EIA) in a 4-level system consisting of vee and ladder subsystems. The four levels are coupled using one weak probe field, and two strong control fields. We consider an experimental realization using energy levels of Rb. This necessitates dealing with different conditions of wavelength mismatch---near-perfect match where all three wavelengths are approximately equal; partial mismatch where the wavelength of one control field is less than the other fields; and complete mismatch where all three wavelengths are unequal. We present probe absorption profiles with Doppler averaging at room temperature to account for experiments in a room temperature Rb vapor cell. Our analysis shows that EIA resonances can be studied using Rydberg states excited with diode lasers.

arXiv comment12 pages, 7 figures

References in corpus (6)

• High-resolution hyperfine spectroscopy of excited states using electromagnetically-induced transparency
• Subnatural linewidth using electromagnetically induced transparency in Doppler-broadened vapor
• Narrow absorptive resonances in a four-level atomic system
• Optical coherences and wavelength mismatch in ladder systems
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Cited by in corpus (3)

• Sub- and super-luminal light propagation using a Rydberg state
• Interaction of a Laguerre-Gaussian beam with Rydberg atoms
• Observation of electromagnetically induced absorption in a vee + ladder system