Fig. 1From: Focusing characteristics of a 4 πparabolic mirror light-matter interfaceOptical set-up of the experiment and relevant energy levels of 174Yb +. The cooling laser (blue) and the repump laser (red) are focused onto the ion through a hole at the backside of the parabolic mirror. AOM - acousto optical modulator, DM - dichroic mirror, F - clean up filter, 4 π-PM - 4 π parabolic mirror, PMT - photo multiplier tube, SHWP - segmented half-wave plateBack to article page