Title :
Reflectivity minimization of semiconductor laser amplifiers with coated and angled facets considering two-dimensional beam profiles
Author :
Besse, Pierre-André ; Gu, Jing-Song ; Melchior, Hans
Author_Institution :
Inst. of Quantum Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland
fDate :
6/1/1991 12:00:00 AM
Abstract :
The reflectivity minimization of semiconductor laser amplifiers and waveguides with straight and angle facets is considered. A formalism, taking two-dimensional waveguides effects into account, that allows the design of multilayer coatings on output facets with minimized reflectivities for either the transverse-electric (TE), transverse-magnetic (TM), or both polarizations is developed. A detailed study of residual modal reflectivities for two-dimensional rectangular laser profiles is presented. Reflectivities as low as 10-4-10 -5 are achieved using angled output facets. The reflectivity of higher order modes and mode conversion are shown to limit the residual reflectivities of tilted laser outputs
Keywords :
optical waveguides; reflectivity; semiconductor junction lasers; angled output facets; higher order modes; mode conversion; multilayer coatings; polarizations; reflectivity minimization; residual modal reflectivities; semiconductor laser amplifiers; tilted laser outputs; transverse-electric; transverse-magnetic; two-dimensional beam profiles; two-dimensional rectangular laser profiles; two-dimensional waveguides; Coatings; Laser modes; Nonhomogeneous media; Polarization; Reflectivity; Semiconductor lasers; Semiconductor optical amplifiers; Semiconductor waveguides; Tellurium; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
