| 准相位匹配倍频系统的带宽性质研究 |
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| 引用本文： | 任爱红,刘正颖,张蓉竹,刘静伦,孙年春.准相位匹配倍频系统的带宽性质研究[J].物理学报,2010,59(10):7050-7054. |
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| 作者姓名： | 任爱红 刘正颖 张蓉竹 刘静伦 孙年春 |
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| 作者单位： | 四川大学光电子研究中心,成都,610064 |
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| 基金项目： | 国家高技术研究发展计划(批准号：2009AA8043014)资助的课题. |
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| 摘 要： | 根据准相位匹配倍频原理,讨论了实现宽带二次谐波转换需要满足的条件.以周期性极化铌酸锂晶体和掺杂氧化镁（7mol%）周期性极化铌酸锂（7mol%MgO-PPLN）晶体为例,分别比较了0型（e+e→e）和Ⅰ型（o+o→e）两种准相位匹配情况下宽带高效二次谐波转换的特性.研究表明,对于7mol%MgO-PPLN晶体,同时满足准相位匹配条件和群速度匹配条件的中心波长和带宽向短波方向移动,且0型（e+e→e）准相位匹配情况下可以获得更大的带宽.
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| 关 键 词： | 准相位匹配 带宽 相位匹配 群速度匹配 |
| 收稿时间： | 2009-12-07 |
Bandwidth in qusai-phase-matched frequency doubling |
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| Ren Ai-Hong,Liu Zheng-Ying,Zhang Rong-Zhu,Liu Jing-Lun,Sun Nian-Chun.Bandwidth in qusai-phase-matched frequency doubling[J].Acta Physica Sinica,2010,59(10):7050-7054. |
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| Authors: | Ren Ai-Hong Liu Zheng-Ying Zhang Rong-Zhu Liu Jing-Lun Sun Nian-Chun |
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| Institution: | Research Center of Photoelectron, Sichuan University, Chengdu 610064, China;Research Center of Photoelectron, Sichuan University, Chengdu 610064, China;Research Center of Photoelectron, Sichuan University, Chengdu 610064, China;Research Center of Photoelectron, Sichuan University, Chengdu 610064, China;Research Center of Photoelectron, Sichuan University, Chengdu 610064, China |
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| Abstract: | Based on the theory of quasi-phase-matched frequency doubling, the condition to generate the broadband second-harmonic is investigated. We analyze the conversion performances of the high efficiency broadband second-harmonic for type-0 (e+e→e) and type-Ⅰ(o+o→e) quasi-phase-matchad cases in periodically poled LiNbO3 crystal and 7mol% periodically poled MgO:LiNbO3 crystal. The results show that the central wavelengths of the fundamental wave and the bandwidth shift toward short waves in periodically poled MgO:LiNbO3 crystal, and the wider bandwidth is obtained in the type-0 quasi-phase-matched case. |
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| Keywords: | quasi-phase-matched bandwidth phase matching group-velocity matching |
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