Efficient electro-optic sampling detection of terahertz radiation via Cherenkov phase matching.
Efficient electro-optic sampling detection of terahertz radiation via Cherenkov phase matching.
复制标题
DOI：
10.1364/oe.19.019901
复制
发表时间：
2011-10
期刊：
影响因子：
3.8
通讯作者：
M. Tani;K. Horita;T. Kinoshita;C. Que;E. Estacio;Kohji Yamamoto;M. Bakunov
中科院分区：
文献类型：
--
作者：
M. Tani;K. Horita;T. Kinoshita;C. Que;E. Estacio;Kohji Yamamoto;M. Bakunov
我们通过实验证明了一种高效的电光采样方案，该方案基于宽带太赫兹辐射与 800 nm 飞秒探测光束在与 Si 棱镜耦合的 0.5 mm 厚 LiNbO3 晶体中的切伦科夫相位匹配。研究发现，切伦科夫相位匹配 LiNbO3 晶体的电光信号与使用共线相位匹配的 4 毫米厚 ZnTe 晶体的电光信号相当。切伦科夫相位匹配技术可以用任何探测波长实现，因此比共线相位匹配方法具有优势。
We experimentally demonstrate an efficient electro-optic sampling scheme based on Cherenkov phase matching of broadband terahertz radiation with 800-nm femtosecond probe beam in a 0.5 mm-thick LiNbO3 crystal coupled to a Si prism. The electro-optic signal from a Cherenkov-phase-matched LiNbO3 crystal is found to be comparable to that with a 4 mm-thick ZnTe crystal using a collinear phase matching. The Cherenkov phase matching technique can be achieved with any probe wavelength and hence has an advantage over the collinear phase matching method.