Title :
A novel surface emitting GaAs/AIGaAs laser diode beam steering device based on surface mode emission
Author :
Köck, A. ; Gmachl, C. ; Rosenberger, M. ; Gormik, E. ; Thanner, C. ; Kort, L.
Author_Institution :
Walter Schottky Inst., Garching, Germany
Abstract :
We present a novel surface emitting laser diode beam steering device based on the excitation and emission of surface modes. This new device is a wavelength tunable GaAs/AlGaAs laser diode, which is modified to allow a coupling of the laser mode to a transverse electric polarized surface mode. A steering of the surface emitted farfield pattern is achieved by a variation of the emission wavelength. By electrically switching the emission wavelength from 877.54 run to 879.13 nm the dominant surface emitted peak is steered by 0.4°.
Keywords :
III-V semiconductors; aluminium compounds; beam steering; gallium arsenide; laser cavity resonators; laser modes; laser tuning; light polarisation; semiconductor lasers; surface emitting lasers; GaAs-AlGaAs; electrical switching; emission wavelength; laser beam steering; laser mode; surface emitted farfield partem; surface emitting laser diode; surface mode emission; transverse electric polarized surface mode; wavelength 877.54 nm to 879.13 nm; wavelength tuning; Beam steering; Diode lasers; Gallium arsenide; Laser excitation; Laser modes; Optical coupling; Polarization; Surface emitting lasers; Surface waves; Tunable circuits and devices;
Conference_Titel :
Solid State Device Research Conference, 1993. ESSDERC '93. 23rd European
Conference_Location :
Grenoble
