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1. 中国科学院上海技术物理研究所红外物理国家实验室, 上海, 200083
2. 上海大学物理系, 上海, 201800
3. 中国科学院上海光学精密机械研究所, 上海, 201800
纸质出版日期:2000-5-30,
收稿日期:1999-4-24,
修回日期:1999-11-22,
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丁士进, 张卫, 徐宝庆, 王季陶. Y(BO<sub>3</sub>,PO<sub>4</sub>):Ce,Tb,Gd的发光特性研究[J]. 发光学报, 2000,21(2): 139-144
DING Shi-jin, ZHANG Wei, WANG Ji-tao, XU Bao-qing. Luminescence Characteristics of Y(BO<sub>3</sub>,PO<sub>4</sub>):Ce,Tb,Gd[J]. Chinese Journal of Luminescence, 2000,21(2): 139-144
铌酸钾锂晶体的近红外透过光谱;利用铌酸钾锂晶体对890~960nm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 infrared transmission spectrum of potassium lithium niobate crystal was studied.The result showed that the spectrum properties of the crystal grown from the melt with higher Li
2
O contents is better than those of the crystal grown from the melt with lower Li
2
O contents
the latter has an absorption peak at the wavelength of 480urn while the former has not
so when a laser beam pass across the crystal
the optical loss for the former is lower than that for the latter.The reasons for the result are related to the reduction of replace chance of Nb atom at Li atom site in potassium lithium niobate crystal grown from melt with higher Li
2
O contents.The reduction of optical loss is very beneficial to the increasing of the second harmonic generation efficiency of the crystal.The second harmonic generation properties of potassium lithium niobate crystal were studied.It showed that the potassium lithium niobate crystal has no frequency-doubling performance unless it has necessary Li contents.The second harmonic generation properties will be improved as the Li contents in the crystal increases.The blue-green laser have been obtained by doubling quasi CW-Ti: sapphire near infrared laser in the wavelength range of 890~960um using potassium lithium crystal grown from the melt with Li
2
O 26mol%
the results showed that the crystal sample has good frequency-doubling efficiency.The means of enhancing the second harmonic generation efficiency of potassium lithium niobate crystal were discussed.It is deduced that the second harmonic generation efficiency will be increased while the light loss of the potassium lithium niobate crystal reduces.
铌酸钾锂晶体透过光谱二次谐波发生
potassium lithium niobate crystaltransmittance spectrumsecond harmonic generation
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