Title :
Lateral waveguiding in stripe-geometry double-heterostructure lasers below the lasing threshold
Author :
Engelmann, Reinhart W H ; Kerps, Dieter ; Nunes, Frederico D.
Author_Institution :
Solid State Laboratory, Hewlett-Packard Laboratories, Palo Alto, CA, USA
fDate :
8/1/1979 12:00:00 AM
Abstract :
Structure in the far-field pattern of current-confined stripe-geometry double-heterostructure lasers in the angle range

is observed at current levels of less than

of threshold value. The behavior is explained by leaky-mode guiding due to a gain maximum under the stripe and to a negative refractive index step on the order of -0.01.
Keywords :
Semiconductor lasers; Carrier confinement; Current measurement; Geometrical optics; Laboratories; Laser modes; Laser transitions; Optical waveguides; Protons; Refractive index; Waveguide junctions;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1979.1070089