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  • Title: Design rules for phase-matched terahertz surface electromagnetic wave generation by optical rectification in a nonlinear planar waveguide.
    Author: Musin RR, Xing Q, Li Y, Hu M, Chai L, Wang Q, Mikhailova YM, Nazarov MM, Shkurinov AP, Zheltikov AM.
    Journal: Appl Opt; 2008 Feb 01; 47(4):489-94. PubMed ID: 18239707.
    Abstract:
    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.
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