Optical lattice polarization effects on hyperpolarizability of atomic clock transitions |
| |
Authors: | Taichenachev A V Yudin V I Ovsiannikov V D Pal'chikov V G |
| |
Institution: | Institute of Laser Physics SB RAS, Novosibirsk 630090, Russia. |
| |
Abstract: | The light-induced frequency shift due to hyperpolarizability (i.e., terms of second-order in intensity) is studied for a forbidden optical transition, J = 0 --> J = 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|