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- W2757968873 abstract "We demonstrate highly efficient, low threshold InAs quantum dot lasers epitaxially grown on on-axis (001) GaP/Si substrates using molecular beam epitaxy. Electron channeling contrast imaging measurements show a threading dislocation density of 7.3 × 106 cm−2 from an optimized GaAs template grown on GaP/Si. The high-quality GaAs templates enable as-cleaved quantum dot lasers to achieve a room-temperature continuous-wave (CW) threshold current of 9.5 mA, a threshold current density as low as 132 A/cm2, a single-side output power of 175 mW, and a wall-plug-efficiency of 38.4% at room temperature. As-cleaved QD lasers show ground-state CW lasing up to 80 °C. The application of a 95% high-reflectivity coating on one laser facet results in a CW threshold current of 6.7 mA, which is a record-low value for any kind of Fabry-Perot laser grown on Si." @default.
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- W2757968873 date "2017-09-18" @default.
- W2757968873 modified "2023-10-17" @default.
- W2757968873 title "High efficiency low threshold current 1.3 <i>μ</i>m InAs quantum dot lasers on on-axis (001) GaP/Si" @default.
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- W2757968873 doi "https://doi.org/10.1063/1.4993226" @default.
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