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  • 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
  • (Optica Publishing Group, 2017),
  • paper CB_P_26

Monolithically integrated Fourier-optical transverse-mode selector for broad area lasers

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Abstract

Ga(As)Sb/GaAs quantum dot broad area lasers (BALs) with an emission wavelength of λ = 930 nm are realised. For suppressing the typical multi-transverse-mode operation of the BALs transverse mode selection filters are monolithically integrated into the laser crystal. Two different approaches are reported, which can both be considered Fourier-optical. Following our spatial-frequency-filter concept with 4f setup from [1] BALs with a monolithically integrated film waveguide lens on one facet and spatial filter elements on the other facet supporting the fundamental mode are developed [2]. The resonator length is l = f = 2700 μm determined by the focal length f of the film lens, the ridge width of 100 μm, and the filter width of 30 μm.

© 2017 IEEE

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