Strain compensated InGaAs/GaAsP/InGaP 980 nm lasers with 90% fiber coupling efficiency


We describe a new InGaP/lnGaAs/GaAs quantum well laser structure, the SPIN (Spread INdex) laser design. The figure of merit for the 980 nm Er-doped fiber application is how much power is coupled into the single-mode fiber. This is determined by the beam divergence and external differential quantum efficiency. To this end, the SPIN laser design allows a… (More)


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