Large-size Er,Yb:YAG Single Crystal: Growth and Performance

Abstract

Er 3+ and Yb 3+ co-doped YAG crystals are very important optical crystals. Currently, Er 3+ and Yb 3+ co-doped YAG crystals are widely used in high power solid state lasers, but there are still many challenges in growing large size, low defect doped YAG crystals using the Czochralski (Cz) method. In this paper, large-sized Er 3+ and Yb 3+ co-doped YAG bulk crystal with a diameter of 80 mm and a length of 230 mm has been obtained by the fast Cz growth method.

Structure, spectroscopy and LD end-pumped laser performance of an Er,Pr:LuYSGG crystal operated at ∼2.8 μm

“…5 shows the absorption spectrum of the Er,Pr:LuYSGG crystal in the range of 320-3000 nm. There are many typical absorption bands of Er 3+ , corresponding to the transition of Er 3+ from the ground state 4 I 15/2 to different excited states, 25,26 as assigned in Table 1. The Er,Pr:LuYSGG crystal exhibits a wide absorption band in the range of 940-990 nm, and the central absorption wavelength is located at 965 nm.…”