Title :
50 mW CW-operated single-mode surface-emitting AlGaAs lasers with 45 degrees total reflection mirrors
Author :
Gfeller, F.R. ; Buchmann, P. ; Dätwyler, K. ; Reithmaier, J.P. ; Vettiger, P. ; Webb, D.J.
Author_Institution :
IBM, Ruschlikon, Switzerland
fDate :
7/1/1992 12:00:00 AM
Abstract :
The authors report on the fabrication and testing of surface-emitting AlGaAs 3.5 mu m ridge lasers with etched mirrors and 45 degrees internal deflectors. The 45 degrees mirror coupling coefficient and the resulting threshold current penalty have been analyzed theoretically and experimentally. A surface-emitted optical power of 50 mW CW at 26 mA threshold current and external differential efficiency of 57% has been achieved in lateral fundamental-mode operation. The optical power density of 14 mW CW per micrometer ridge width is the highest reported to date and produces two-dimensional surface-emitting laser arrays of diffraction-limited beam quality suitable for optical storage applications.<>
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; laser accessories; laser modes; mirrors; semiconductor laser arrays; 14 mW; 26 mA; 2D LD arrays; 3.5 micron; 50 mW; 57 percent; AlGaAs; CW-operated; IR; diffraction-limited beam quality; etched mirrors; external differential efficiency; internal deflectors; lateral fundamental-mode operation; micrometer ridge width; mirror coupling coefficient; optical deflectors; optical power; optical power density; optical storage applications; optical testing; optical workshop techniques; ridge lasers; semiconductors; single-mode; surface-emitting; surface-emitting laser arrays; threshold current penalty; total reflection mirrors; Etching; Laser theory; Mirrors; Optical arrays; Optical device fabrication; Optical diffraction; Power lasers; Surface emitting lasers; Testing; Threshold current;
Journal_Title :
Photonics Technology Letters, IEEE
