Author:
Topper Brian,Kuhn Stefan,Neumann Alexander,Albrecht Alexander R.,Flores Angel S.,Häßner Denny,Hein Sigrun,Hupel Christian,Nold Johannes,Haarlammert Nicoletta,Schreiber Thomas,Sheik-Bahae Mansoor,Mafi Arash
Abstract
We laser cooled ytterbium doped silica to 255 K. Temperature-dependent spectroscopy measurements reveal cooling to 150 K is possible. We also report the observation of site-selective excitation in Yb, Al co-doped silica.