Title :
New formula for semiconductor laser facet reflectivity
Author :
Kendall, P.C. ; Roberts, D.A. ; Robson, P.N. ; Adams, M.J. ; Robertson, M.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
Abstract :
An analytic expression for the main mode reflectivity of a multicoated laser facet at normal incidence is derived using the free space radiation mode technique. This uses exact guided modes, and accurately models the radiation modes near the facet. The results compare favorably with exact TE and TM benchmarks while retaining the simplicity and speed of the Fresnel approximations.<>
Keywords :
laser modes; laser theory; reflectivity; semiconductor lasers; analytic expression; exact guided modes; free space radiation mode; main mode reflectivity; multicoated laser facet; normal incidence; semiconductor laser facet reflectivity; Boundary conditions; Coatings; Laser modes; Reflectivity; Refractive index; Semiconductor lasers; Semiconductor optical amplifiers; Slabs; Tellurium; Waveguide theory;
Journal_Title :
Photonics Technology Letters, IEEE
