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研究铌酸钾锂晶体的近红外透过光谱；利用铌酸钾锂晶体对８９０～９６０ｕｍ的Ｔｉ：ｓａｐｐｈｉｒｅ近红外激光进行倍频，获得蓝绿光输出；研究了晶体的倍频特性，探讨了提高晶体倍频效率的方法。
The near-infrared transmission spectrum of potassium potassium niobate crystal was studied. The potassium-niobate crystal was used to multiply the 890 ~ 960um Ti: sapphire near-infrared laser to obtain the blue-green light output. Method to improve crystal frequency doubling efficiency.