Two-Photon Absorption
Quantum Physics
2007-05-23 v1
Abstract
Two-photon absorption is theoretically analyzed within the semiclassical formalism of radiation-matter interaction. We consider an ensemble of inhomogeneously broadened three-level atoms subjected to the action of two counterpropagating fields of the same frequency. By concentrating in the limit of large detuning in one-photon transitions, we solve perturbatively the Bloch equations in a non-usual way. In this way we derive an analytical expression for the width of the two-photon resonance that makes evident sub-Doppler two--photon spectroscopy. We also derive an analytical expression for the Stark shift of the two-photon resonance.
Cite
@article{arxiv.quant-ph/0402155,
title = {Two-Photon Absorption},
author = {I. Perez-Arjona and G. J. de Valcarcel and Eugenio Roldan},
journal= {arXiv preprint arXiv:quant-ph/0402155},
year = {2007}
}
Comments
17 pages, 5 figures. Didactic article