Abstract

Nd³⁺, Cr³⁺-codoped YAG single crystal fabricated by the Verneuil method was developed by Kiss and Duncan¹ in 1964. An energy transfer from the 3d bands (²E state) of the Cr³⁺ ions to the 4f band (⁴F_3/2 state) of the Nd³⁺ ions in the YAG was observed for this material, and that doubly doped system operated as a cross-pumped cw laser. In a YAG crystal, Cr³⁺ ions, as well as Nd³⁺ ions, play an important role for sensitizing.

© 1996 IEEE