24-wavelength distributed Bragg reflector laser array with surface gratings
O. Brox, J. Fricke, A. Klehr, A. Maaßdorf, M. Matalla, H. Wenzel and G. Erbert
Published in:
Electron. Lett., vol. 51, no. 17, pp. 1352-1354 (2015).
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.
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
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