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通过对影响铌酸锂电光调Q开关工作温度稳定性的原因分析,认为晶体自身的应力是导致铌酸锂电光调Q开关温度稳定性差的主要原因。而减小晶体自身应力的关键主要取决于晶体光学质量的均匀性,同时,组分的波动也会使晶体产生应力。为此利用前期大尺寸铌酸锂晶体质量大幅提高的结果,配合适当的热处理工艺,研制出了系列铌酸锂调Q开关,通过在1064nm、1318nm、2128nm等激光器中应用,这些调Q开关均能稳定工作,完全能够满足激光雷达等脉冲激光器的使用。
By analyzing the reason of stability of working temperature stability of LiNbO3-based Q-switch, it is considered that the stress of the crystal itself is the main reason of the poor stability of LiNbO3-based Q-switch. The key to reducing the self-stress of a crystal depends mainly on the uniformity of the optical quality of the crystal and, at the same time, the fluctuation of the composition causes stress on the crystal. For this reason the use of pre-large-scale lithium niobate crystal quality greatly improved the results, with the appropriate heat treatment process, developed a series of lithium niobate Q-switch, through the 1064nm, 1318nm, 2128nm lasers and other applications, these Q- Stable work, fully able to meet the laser radar pulse laser use.