Title :
Radiation patterns of higher azimuthal order spatial modes from a concentric-circle-grating waveguide cavity using the volume-current method
Author :
Olson, Craig ; Hall, Dennis G.
Author_Institution :
Inst. of Opt., Rochester Univ., NY, USA
fDate :
12/1/1998 12:00:00 AM
Abstract :
We calculate the surface-emitted scattered radiation from a concentric-circle-grating waveguide cavity. The full vector form of the scattered radiation is calculated using the volume-current method, where the index perturbation caused by the grating is represented as an induced-current driving term in the free-space wave equation for the scattered field. We show intensity patterns and field vector plots for a range of azimuthal modes besides the previously reported fundamental mode, and we find excellent agreement with the observed emission patterns and field polarization from concentric-circle-grating surface-emitting semiconductor lasers
Keywords :
Bragg gratings; laser cavity resonators; laser modes; light scattering; perturbation theory; semiconductor lasers; surface emitting lasers; waveguide lasers; azimuthal spatial mode; concentric-circle-grating waveguide cavity; field polarization; free-space wave equation; optical scattering; perturbation method; radiation pattern; surface emitting semiconductor laser; volume-current method; Gratings; Laser feedback; Laser modes; Laser theory; Nonlinear optics; Optical feedback; Optical saturation; Optical scattering; Semiconductor lasers; Surface emitting lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
