本文在不同退火温度和时间下对KDP晶体进行退火实验,并对其光学质量进行了测试和分析.实验表明:合适的退火条件可以增加晶体的透过率、提高光学均匀性、减少散射颗粒,其中160℃为KDP晶体最佳退火温度.在相同的退火温度下,延长退火时间能够更好地提高晶体的光学均匀性和结构完整性.在160℃下退火48h能够使晶体的光损伤阈值提高28％,退火240h能够提高40％以上.
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