Title :
Analysis of three-grating coupled surface emitters
Author :
Hardy, Amos ; Waarts, Robert G. ; Welch, David F. ; Streifer, William
Author_Institution :
Spectra Diode Labs., San Jose, CA, USA
fDate :
5/1/1990 12:00:00 AM
Abstract :
Results of a grating-coupled surface emitter (GSE) analysis and a confirming experiment are reported. The GSE consists of two gain sections and three gratings sections that are not necessarily identical. The second-order gratings act both as distributed Bragg reflectors and output couplers via radiation. Thresholds of longitudinal modes are calculated for a symmetrical structure as a function of the two gain section pumping currents, and, for various combinations of pump currents, the near and far fields are compared. The theory is shown to agree qualitatively with an experiment
Keywords :
diffraction gratings; optical couplers; semiconductor junction lasers; distributed Bragg reflectors; far fields; gain section pumping currents; gain sections; grating coupled surface emitting diode lasers; gratings sections; longitudinal modes; output couplers; quantum well gain sections; second-order gratings; symmetrical structure; three-grating coupled surface emitters; thresholds; Absorption; Bragg gratings; Couplers; Diffraction gratings; Diode lasers; Distributed feedback devices; Optical coupling; Phased arrays; Senior members; Surface emitting lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
