Title :
Cherenkov second-harmonic generation in multilayer waveguide structures
Author :
Leo, G. ; Drenten, R.R. ; Jongerius, M.J.
Author_Institution :
Rome Univ., Italy
fDate :
2/1/1992 12:00:00 AM
Abstract :
A model is presented that calculates the features of Cerenkov second-harmonic generation (SHG) in planar dielectric waveguides with an arbitrary index profile. These waveguides are represented by a stack of homogeneous layers of biaxially birefringent media. The model describes type I SHG in channel waveguides within a few approximations, such as the assumption of a quasi-slab channel geometry. Furthermore, this study comprises results of previous step-index models given in the literature, as a particular case of a one-layer structure. These results are in close agreement with measurements of the SHG efficiency in Rb-exchanged erfc waveguides in KTP materials, and in proton-exchanged step waveguides in LiNbO3 as functions of the pump wavelength
Keywords :
Cherenkov radiation; birefringence; integrated optics; optical films; optical harmonic generation; optical waveguide theory; refractive index; Cerenkov second-harmonic generation; Cherenkov SHG; KTP materials; KTiOPO4; LiNbO3; Rb-exchanged erfc waveguides; SHG efficiency; arbitrary index profile; biaxially birefringent media; channel waveguides; homogeneous layers; multilayer waveguide structures; one-layer structure; planar dielectric waveguides; proton-exchanged step waveguides; pump wavelength; step-index models; type I SHG; Laser beams; Laser excitation; Nonhomogeneous media; Nonlinear optics; Optical harmonic generation; Optical recording; Optical resonators; Optical waveguides; Pump lasers; Semiconductor lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
