Title :
24-wavelength distributed Bragg reflector laser array with surface gratings
Author :
Brox, O. ; Fricke, J. ; Klehr, A. ; Maassdorf, A. ; Matalla, M. ; Wenzel, H. ; Erbert, G.
Author_Institution :
Ferdinand-Braun-Inst., Leibniz-Inst. fur Hochst-frequenztechnik im Forschungsverbund Berlin e.V., Berlin, Germany
Abstract :
A small footprint diode laser array of 24 individually addressable distributed Bragg reflector lasers is presented. Third-order gratings etched into the surface of an AlGaAs vertical waveguide structure act as Bragg reflectors. The ridge waveguides have an 87 μm-wide spacing and the emission wavelengths are spread on a 0.5 nm-wide grid around a centre wavelength of 905 nm. All 24 lasers on the array emit single mode with side mode suppression ratios > 50 dB and output powers >17 mW at 40 mA pump current.
Keywords :
III-V semiconductors; aluminium compounds; diffraction gratings; distributed Bragg reflector lasers; gallium arsenide; laser modes; optical pumping; ridge waveguides; semiconductor laser arrays; AlGaAs; current 40 mA; distributed Bragg reflector laser array; output powers; pump current; ridge waveguides; side mode suppression ratios; small footprint diode laser array; surface gratings; third-order gratings; vertical waveguide structure; wavelength 905 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.2030
