Yb-doped crystal for a solid state laser and method of preparing the same

摘要

The present invention provides a Yb-doped crystal for a solid state laser, wherein a main active element of the Yb-doped crystal comprises Yb. sup.3 +. The Yb-doped crystal for a solid state laser is prepared by increasing a ratio of Yb.sup.3 + to Yb.sup.2 + in a Yb-doped material by a heat treatment to the Yb-doped material in an oxidizing atmosphere, and carrying out a crystal growth of the Yb-doped material.