Monolithic integration of transverse mode selectors with antimonide broad area lasers

Experimental results of the combination of AlGaIn-AsSb-based multiple quantum well broad area lasers with a monolithically integrated Fourier-optical 4f spatial-frequency-filter set-up for transverse mode selection are presented. Laser chips with filters for the selection of the fundamental transverse mode and higher order modes (here exemplarily the mode number 6) are processed, their emission is characterized.