Investigation of the 4<i>f</i>146<i>s</i>2 1<i>S</i>0−4<i>f</i>135<i>d</i>6<i>s</i>2 (<i>J</i> <b>=</b> 2) clock transition at 431 nm of 171Yb atoms trapped in an optical lattice

Abstract

With the aid of an optical frequency divider based on an optical frequency comb, the frequency of a laser at 431 nm is divided from a cavity-stabilized laser at 578 nm. Using the frequency-stabilized 431 nm laser, we observe a 2.5 kHz linewidth 4f146s2 1S0−4f135d6s2 (J = 2) transition of 171Yb atoms trapped in an optical lattice. By measuring the lattice-induced frequency shift, we determine the magic wavelength of the optical lattice for the 431 nm transition to be 797.97(20) nm. The frequency of the 431 nm transition is measured to be 695 171 054 856.9(1.1) kHz by referencing to the 1S0−3P0 transition at 578 nm of Yb atoms.