Terahertz wave generation using type II phase matching polarization combination via difference frequency generation with LiNbO3
Terahertz wave generation using type II phase matching polarization combination via difference frequency generation with LiNbO3
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DOI：
10.7567/jjap.54.062202
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发表时间：
2015-05
影响因子：
1.5
通讯作者：
T. Akiba;Y. Seki;Masaki Odagiri;Ibuki Hashino;K. Suizu;Y. Avetisyan;K. Miyamoto;T. Omatsu
中科院分区：
文献类型：
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作者：
T. Akiba;Y. Seki;Masaki Odagiri;Ibuki Hashino;K. Suizu;Y. Avetisyan;K. Miyamoto;T. Omatsu
我们提出了使用 II 型相位匹配偏振组合通过铌酸锂 (LiNbO3) 晶体的差频生成 (DFG) 来生成太赫兹 (THz) 波。由于LiNbO3晶体具有大的吸收率和高的折射率色散，迄今为止共线相位匹配尚未实现。在本文中，我们提出使用II型相位匹配能够避免这些缺陷并产生太赫兹波。我们通过实验演示了前向和后向共线II型相位匹配方法，并证实使用简单的设备可以产生太赫兹波。该方法将适用于小型太赫兹波源的应用。
We present terahertz (THz) wave generation using type II phase matching polarization combination via difference frequency generation (DFG) with lithium niobate (LiNbO3) crystal. A collinear phase matching has not been realized so far because LiNbO3 crystal has a large absorption and high refractive index dispersion. In this paper we proposed that using type II phase matching is able to avoid these defects and generate the THz wave. We experimentally demonstrated the forward and backward collinear type II phase matching method, and confirmed that THz wave is generated by using simple equipment. This method will be applied for the applications for a small THz wave sources.