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Cr∶LiNbO₃及Cr,Fe∶LiNbO₃晶体热释电系数提高的研究

Enhancement of Pyroelectric Coefficient of Cr∶LiNbO₃ and Cr,Fe∶LiNbO₃ Crystals

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【作者】张玲；崔磊；孙军；韩文卿；王俊；孔勇发；刘士国；黄自恒；陈绍林；许京军；

【Author】 ZHANG Ling1,2,CUI Lei1,2,SUN Jun1,3,HAN Wen-qing1,2,WANG Jun1,2,KONG Yong-fa1,2,LIU Shi-guo1,HUANG Zi-heng1,CHEN Shao-Lin1,XU Jing-jun1,2 (1.Key Laboratory of Weak Light Nonlinear Photonics,Ministry of Education,Nankai University,Tianjin 300457,China; 2.TEDA Applied Physics College,Nankai University,Tianjin 300457,China; 3.Advanced Technology Institute,Nankai University,Tianjin 300071,China)

【机构】南开大学弱光非线性光子学教育部重点实验室；南开大学泰达应用物理学院；南开大学现代应用技术研究院；

【摘要】生长了掺杂量分别为0.2mol%、0.5mol%的掺铬同成分配比铌酸锂晶体和掺铬0.2mol%、铁0.04mol%的双掺同成分配比铌酸锂晶体。利用动态电流法测试了它们的热释电系数。在同样的测试条件下,与未掺杂的同成分铌酸锂晶体相比较,掺铬铌酸锂(Cr∶LiNbO3)晶体和铬、铁双掺铌酸锂(Cr,Fe∶LiNbO3)晶体的热释电系数明显提高。同时对掺杂提高晶体热释电系数的机理进行了探讨。更多还原

【Abstract】 Different congruent LiNbO3 crystals with 0.2 mol% Cr doped,0.5 mol% Cr doped,0.2 mol% Cr and 0.04 mol% Fe co-doped have been grown,and these crystals pyroelectric coefficients have been measured by dynamic current method. Under the same measuring conditions,pyroelectric coefficients of crystals doped with chromium and crystals codoped with chromium and iron enhanced notable compared with pure congruent lithium niobate crystals. The mechanism of pyroelectric coefficient enhancement was discussed.更多还原