Optical Lattice Polarization Effects on Hyperpolarizability of Atomic Clock Transitions
Abstract
The light-induced frequency shift due to the hyperpolarizability (i.e. terms of second-order in intensity) is studied for a forbidden optical transition, =0=0. A simple universal dependence on the field ellipticity is obtained. This result allows minimization of the second-order light shift with respect to the field polarization for optical lattices operating at a magic wavelength (at which the first-order shift vanishes). We show the possibility for the existence of a magic elliptical polarization, for which the second-order frequency shift vanishes. The optimal polarization of the lattice field can be either linear, circular or magic elliptical. The obtained results could improve the accuracy of lattice-based atomic clocks.
Cite
@article{arxiv.physics/0606214,
title = {Optical Lattice Polarization Effects on Hyperpolarizability of Atomic Clock Transitions},
author = {A. V. Taichenachev and V. I. Yudin and V. D. Ovsiannikov and V. G. Pal'chikov},
journal= {arXiv preprint arXiv:physics/0606214},
year = {2009}
}
Comments
4 pages, RevTeX4, 2 eps figs