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- W2017698715 abstract "Quantum dots laser diodes using the dots-in-a-well (DWELL) structure (InAs dots in an InGaAs quantum wells) have exhibited significant recent progress. With a single InAs dot layer in In<SUB>0.15</SUB>Ga<SUB>0.85</SUB>As quantum well, threshold current densities are as low as 26 A cm<SUP>-2</SUP> at 1.25 micrometer. Quantum dot laser threshold current densities are now lower than any other reported semiconductor laser. In this work, the threshold current density is reduced to 16 A cm<SUP>-2</SUP> by HR coatings on the same device. Further investigation of performance reveals that use of multiple DWELL stacks improves the modal gain and internal quantum efficiency. It is suggested that carrier heating out of the quantum dots limits the T<SUB>O</SUB> value of these DWELL lasers." @default.
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- W2017698715 date "2000-07-14" @default.
- W2017698715 modified "2023-09-23" @default.
- W2017698715 title "Ultralow-threshold-current-density quantum dot lasers using the dots-in-a-well (DWELL) structure" @default.
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- W2017698715 doi "https://doi.org/10.1117/12.391490" @default.
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