Open Access24‐wavelength distributed Bragg reflector laser array with surface gratings
Author(s) -
Brox O.,
Fricke J.,
Klehr A.,
Maaßdorf A.,
Matalla M.,
Wenzel H.,
Erbert G.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2030
Subject(s) - distributed bragg reflector , optics , laser , materials science , distributed bragg reflector laser , wavelength , optoelectronics , reflector (photography) , tunable laser , semiconductor laser theory , waveguide , bragg's law , fiber bragg grating , diode , physics , light source , diffraction
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.