Abstract

The waveguide mechanism in channeled-substrate-planar (CSP) structure (AlGa)As lasers is analyzed. The light leakage into the GaAs substrate outside the channel is shown to provide effective refractive index and loss differences, which function to stabilize the transverse mode in the junction plane. Observed light output vs current characteristics and mode patterns in the lasers justify the theoretical model.

© 1978 Optical Society of America

Calculation of the effective refractive-index step for the metal-cladded-ridge-waveguide laser

M.-C. Amann and B. Stegmuller
Appl. Opt. 20(8) 1483-1486 (1981)

Rib waveguide switches with MOS electrooptic control for monolithic integrated optics in GaAs-Al_xGa_1−xAs

J. C. Shelton, F. K. Reinhart, and R. A. Logan
Appl. Opt. 17(16) 2548-2555 (1978)

Semiconductor lasers with a thin active layer (>0.1 μm) for optical communications

N. Chinone, H. Nakashima, I. Ikushima, and R. Ito
Appl. Opt. 17(2) 311-315 (1978)

Effects of beam displacement and front and back mistracking of junction lasers on lightwave transmitter output stability

F. S. Chen, M. A. Karr, and P. W. Shumate
Appl. Opt. 17(14) 2219-2223 (1978)

Single-mode GaAs-AlxGa₁₋xAs rib waveguide switches

J. C. Shelton, F. R. Reinhart, and R. A. Logan
Appl. Opt. 17(6) 890-891 (1978)