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Abstract
A Nd3+/Yb3+: Sr3Gd2(BO3)4 crystal 40 mm in diameter and 15 mm in height was grown by the Czochralski method. The spectroscopic characterization of Nd3+/Yb3+:Sr3Gd2(BO3)4 crystal was investigated. The emission crosssection of Yb3+ in the Nd3+/Yb3+:Sr3Gd2(BO3)4 crystal is 1·57 × 10−20 cm2 at 1014 nm, and the radiation lifetime τrad of 2F5/2 of Yb3+ is 881·6 μs. The result shows that the energy transfer occurs from 4F3/2 of Nd3+ to 2F5/2 of Yb3+ in the Nd3+/Yb3+:Sr3Gd2(BO3)4 crystal, which should enhance the laser efficiency of Yb3+ in the Nd3+/Yb3+:Sr3Gd2(BO3)4 crystal.