Title :
Influence of external mirror on modal behavior of twin-stripe index-guided injection lasers
Author :
Paiss, Idan ; Hardy, Amos
Author_Institution :
Tel Aviv Univ., Israel
fDate :
4/1/1991 12:00:00 AM
Abstract :
The coupled-mode theory of parallel waveguides is used to calculate the influence of an external mirror on the modal behavior of the AR-coated laser array. The case of twin-stripe index-guided injection lasers with separate contacts is treated in detail. It is shown that for asymmetrical current injection, the external cavity couples the laser´s guided array modes and creates new laser-cavity modes with a better mode discrimination in favour of the one having a single far-field pattern. These results imply that multiple laser arrays might benefit from an additional external mirror
Keywords :
antireflection coatings; laser accessories; laser modes; laser theory; mirrors; semiconductor laser arrays; AR-coated laser array; anti-reflection coatings; asymmetrical current injection; coupled-mode theory; external mirror; guided array modes; laser-cavity modes; modal behavior; mode discrimination; multiple laser arrays; parallel waveguides; single far-field pattern; twin-stripe index-guided injection lasers; Laser modes; Laser stability; Laser theory; Mirrors; Optical arrays; Optical coupling; Optical reflection; Semiconductor laser arrays; Waveguide lasers; Waveguide theory;
Journal_Title :
Lightwave Technology, Journal of
