| PPLN倍频效率与温度关系分析 |
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| 引用本文： | 桑梅,薛挺,等.PPLN倍频效率与温度关系分析[J].光电子．激光,2002,13(4):343-348. |
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| 作者姓名： | 桑梅 薛挺 |
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| 作者单位： | 1. 天津大学理学院,天津,300072
2. 天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津,300072 |
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| 基金项目： | 天津市重点自然科学基金资助项目 (批准号 993 80 0 71) |
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| 摘 要： | 本文研究了准位相匹配周期性极化铌酸锂（PPLN）晶体的体器件倍频特性与晶体温度的关系，从准相位匹配位相失配关系出发，推导了PPLN光栅周期和倍频效率的表达式，并考虑到铌酸锂晶体的热膨胀因素，给出了温度调谐带宽精确表达式，理论分析与已有实验结果进行了比较，符合得较好。
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| 关 键 词： | 倍频效率 温度关系分析 周期极化铌酸锂 晶体 |
| 文章编号： | 1005-0086(2002)04-0343-06 |
| 修稿时间： | 2002年1月7日 |
Temperature Dependence of the Second Harmonic Generation in Periodically Poled LiNbO_3 Crystal |
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| SANG Mei,XUE Ting,YU Jian,NI Wen jun,JI Lei,LI Shi chen.Temperature Dependence of the Second Harmonic Generation in Periodically Poled LiNbO_3 Crystal[J].Journal of Optoelectronics·laser,2002,13(4):343-348. |
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| Authors: | SANG Mei XUE Ting YU Jian NI Wen jun JI Lei LI Shi chen |
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| Affiliation: | SANG Mei 1,XUE Ting,YU Jian,NI Wen jun,JI Lei,LI Shi chen |
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| Abstract: | Considering the sensitivity of the refractive index to the temperature in PPLN and the thermal expansion character of the LiNbO 3 crystal,the grating period expression and the temperature dependency characterization of quasi phase matched second harmonic generation (QPM SHG) bulk devices fabricated in Z cut LiNbO 3 crystal are theoretically analyzed.The results show that the max conversion efficiency of SHG can be obtaied by tuning the temperature in the PPLN to approach the center temperature.The relations between the temperature tuning bandwidth and the interactive length and the fundamental wavelength are also given.The theoretical results fit well to many author's experimental achievements. |
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| Keywords: | Quasi Phased Matched(QPM) Periodically Poled LiNbO 3(PPLN) Second Harmonic Generation(SHG) |
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