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RTP(RbTiOPO4)是一种新型电光晶体,具有高电阻率、大电光系数、高抗光伤阈值等优点,成为理想的电光调Q晶体。采用两块4mm×4mm×5.3mm的RTP晶体作为电光开关,实现了高重复率RTP电光调Q Nd:YAG1064nm激光运转,获得了不同重复率、不同输出镜透过率情况下单脉冲能量和脉冲宽度与泵浦能量的依赖关系。随着泵浦能量的增加,脉冲宽度变窄,脉冲能量变大。在相同的泵浦能量下,重复率越大,脉宽越宽,脉冲能量越小。在平面波近似下,给出了RTP电光调Q Nd:YAG激光运转的耦合速率方程,数值求解方程的理论计算与实验结果相符。
RTP (RbTiOPO4) is a new type of electro-optic crystal, which has the advantages of high resistivity, large electro-optic coefficient and high light-resistance threshold, making it an ideal electro-optic Q crystal. Two 4mm × 4mm × 5.3mm RTP crystals were used as the electro-optical switch to realize the high repetition rate RTP electro-optic Q-switched Nd: YAG1064nm laser. The single pulse energy and pulse with different repetition rates and different output mirror transmittances The dependence of width on pump energy. As the pump energy increases, the pulse width becomes narrower and the pulse energy becomes larger. Under the same pump energy, the greater the repetition rate, the wider the pulse width, the smaller the pulse energy. In the plane wave approximation, the coupling rate equation of RTP electro-optic Q-switched Nd: YAG laser is given, and the theoretical calculation of the numerical solution equation is consistent with the experimental results.