Active narrowband filtering, line narrowing and gain using ladder electromagnetically induced transparency in an optically thick atomic vapour
Atomic Physics
2014-07-10 v2 Optics
Quantum Physics
Abstract
Electromagnetically induced transparency (EIT) resonances using the ladder-system in optically thick Rb atomic vapour are studied. We observe a strong line narrowing effect and gain at the transition wavelength due to an energy-pooling assisted frequency conversion with characteristics similar to four-wave mixing. As a result it is possible to observe tunable and switchable transparency resonances with amplitude close to and a linewidth of 15 MHz. In addition, the large line narrowing effect allows resolution of Rb hyperfine structure even in the presence of strong power broadening.
Keywords
Cite
@article{arxiv.1311.7268,
title = {Active narrowband filtering, line narrowing and gain using ladder electromagnetically induced transparency in an optically thick atomic vapour},
author = {James Keaveney and Armen Sargsyan and David Sarkisyan and Aram Papoyan and Charles S. Adams},
journal= {arXiv preprint arXiv:1311.7268},
year = {2014}
}