An optically pumped InGaAsP/InP quantum dot rolled-up microtube laser

ORAL

Abstract

Rolled-up quantum dot microtubes are a promising candidate for light sources in integrated photonics. We have fabricated InGaAsP/InAs quantum dot rolled-up microtubes from InGaAsP strained bilayers with embedded InAs quantum dots (grown by chemical beam epitaxy). In room-temperature photoluminescence experiments we have observed resonant-mode emission with wavelengths in the telecom range. This resonant emission is consistent with whispering gallery modes. At a temperature of 82 K, we have demonstrated multi-mode lasing under continuous wave optical pumping. We estimate an ultra-low lasing threshold near 1.25 $\mu$Ws of absorbed optical power.

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Authors

  • Pablo Bianucci

    Department of Engineering Physics, \'Ecole Polytechnique de Montr\'eal, Montreal QC, H3C 3A7, Department of Engineering Physics, \'Ecole Polytechnique de Montr\'eal

  • M. Hadi Tavakoli Dastjerdi

    Department of Electrical Engineering, McGill University, Montreal QC, H3A 2A7

  • Shouvik Mukherjee

    Department of Electrical Engineering, McGill University, Montreal QC, H3A 2A7

  • Mehrdad Djavid

    Department of Electrical Engineering, McGill University, Montreal QC, H3A 2A7

  • Philip Poole

    Institute for Microstructural Sciences, National Research Council, Ottawa, Ontar io K1A 0R6, Canada

  • Zetian Mi

    Department of Electrical Engineering, McGill University, Montreal QC, H3A 2A7