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研究了 Fe:L i Nb O3 晶体的光折变性能随晶体温度变化的动态性质。实验结果显示 ,质子与热激发电子之间存在着强烈的竞争 ,在较低的温度下 (低于 12 0℃ ) ,在晶体光折变响应时间内 ,质子对晶体的光折变性能的影响很小 ,而电子的热激发速率 β随晶体温度的变化将是影响晶体光折变性能的主要因素 ;而在较高温度时 (高于 12 0℃ ) ,质子由于迁移率的增大而开始显著地影响晶体的光折变性能。
The dynamic properties of the photorefractive properties of the Fe: Li NbO3 crystal with the temperature of the crystal were studied. The experimental results show that there is a strong competition between the protons and the thermally excited electrons. The effect of protons on the photorefractive properties of the crystals during the photorefractive response time at lower temperatures (lower than 120 ° C) Is very small, and the change of electron thermal activation rate β with the crystal temperature will be the main factor that affects the photorefractive properties of the crystal. At higher temperature (above 1200 ℃), the proton begins to move due to the increase of the mobility Significantly affects the photorefractive properties of the crystal.