Design rules for phase-matched terahertz surface electromagnetic wave generation by optical rectification in a nonlinear planar waveguide.
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.
Musin
Roman R
RR
Department of Physics, International Laser Center, M.V. Lomonosov Moscow State University, Vorob'evy Gory, Moscow, Russia 119992.
Xing
Qirong
Q
Li
Yanfeng
Y
Hu
Minglie
M
Chai
Lu
L
Wang
Qingyue
Q
Mikhailova
Yuliya M
YM
Nazarov
Maksim M
MM
Shkurinov
Alexander P
AP
Zheltikov
Aleksei M
AM
D000465:Algorithms; D017076:Computer-Aided Design; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008670:Metals / Q000737:chemistry*; D008872:Microwaves; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013499:Surface Properties
D008670:Metals