Title :
Coupled-mode analysis of second harmonic generation in the form of Cerenkov radiation from a channel optical waveguide
Author_Institution :
Sony Res. Center, Yokohama, Japan
fDate :
10/1/1990 12:00:00 AM
Abstract :
Optical second-harmonic generation (SHG) in the form of Cerenkov radiation from a channel waveguide is analyzed by a coupled-mode theory. A simple formula is given which expresses the SHG efficiency in terms of waveguide and optical nonlinear parameters and by which one can simulate the radiation pattern of SHG. Computational examples are plotted for LiNbO3 crystals and reasonably agree with reported results. The analysis shows that the efficiency could be increased significantly if the sign of a d-constant in a substrate were modulated with a proper period
Keywords :
Cherenkov radiation; lithium compounds; optical harmonic generation; optical waveguide theory; Cerenkov radiation; LiNbO3 crystals; SHG efficiency; channel optical waveguide; coupled-mode theory; d-constant; optical nonlinear parameters; radiation pattern; second harmonic generation; substrate; Coupled mode analysis; Equations; Frequency conversion; Harmonic analysis; Nonlinear optics; Optical harmonic generation; Optical waveguide theory; Optical waveguides; Refractive index; Waveguide theory;
Journal_Title :
Quantum Electronics, IEEE Journal of
