Praseodymium ion (0.5, 1 mol%) and magnesium ion (1, 5 and 7 mol%) co-doped LiNbO₃ crystals have been grown by Bridgman method. The crystal was designed to absorb idler generated by the quasi parametric chirped pulse amplification (QPCPA) system near 1588 nm (the pump is 1064 nm and signal is 3200 nm). The contents of Praseodymium (Pr) and magnesium (Mg) ions in the crystals were measured, and the crystal structure and Raman vibration mode were characterized. The optical properties of the crystal were systematically investigated, the transmittance of the crystal at 3200 nm and 1064 nm was about 75%, and there is an obvious absorption band at 1588 nm. The thermal properties of the crystal were studied, and the results showed that the thermal properties of the crystal were improved by doping Mg²⁺. The laser damage threshold of Pr³⁺(0.5mol%)-Mg²⁺(7mol%) co-doped LiNbO₃ crystal was as high as 109.73 × 10⁷ W/cm² (@1064 nm, 5 ns).

镨离子(0.5, 1 mol%) 和镁离子(1, 5 和7 mol%) 共掺杂LiNbO ₃晶体已经通过Bridgman 方法生长。该晶体旨在吸收由准参数啁啾脉冲放大 (QPCPA) 系统在 1588 nm 附近（泵浦为 1064 nm，信号为 3200 nm）产生的闲散光。测量了晶体中镨（Pr）和镁（Mg）离子的含量，并表征了晶体结构和拉曼振动模式。系统研究了晶体的光学性质，晶体在 3200 nm 和 1064 nm 处的透光率约为 75%，在 1588 nm 处有明显的吸收带。对晶体的热性能进行了研究，结果表明掺杂Mg ²⁺提高了晶体的热性能. Pr ³⁺ (0.5mol%)-Mg ²⁺ (7mol%) 共掺杂LiNbO ₃晶体的激光损伤阈值高达109.73 × 10 ⁷  W/cm ² (@1064 nm, 5 ns)。