Musin Roman R, Xing Qirong, Li Yanfeng, Hu Minglie, Chai Lu, Wang Qingyue, Mikhailova Yuliya M, Nazarov Maksim M, Shkurinov Alexander P, Zheltikov Aleksei M
Department of Physics, International Laser Center, M.V. Lomonosov Moscow State University, Vorob'evy Gory, Moscow, Russia 119992.
Appl Opt. 2008 Feb 1;47(4):489-94. doi: 10.1364/ao.47.000489.
The theory of guided waves in metal-dielectric planar multilayer structures is applied to reduce the loss and maximize optical nonlinearity for efficient terahertz-field generation in a surface electromagnetic wave by femtosecond laser pulses confined in a (chi)((2)) nonlinear planar waveguide. For typical parameters of thin-film polymer waveguides and metal-dielectric interfaces, the optimal size of the (chi)((2)) waveguide core providing the maximum efficiency of terahertz plasmon-field generation is shown to be less than the wavelength of the optical pump field.
金属 - 电介质平面多层结构中的导波理论被应用于降低损耗并最大化光学非线性，以便在由限制在（χ）（2）非线性平面波导中的飞秒激光脉冲产生表面电磁波时高效地产生太赫兹场。对于薄膜聚合物波导和金属 - 电介质界面的典型参数，结果表明，提供太赫兹等离子体场产生最大效率的（χ）（2）波导芯的最佳尺寸小于光泵浦场的波长。
