Design of Bottom-Emitting Metallic Nanolasers Integrated With Silicon-On-Insulator Waveguides

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Abstract

We propose and analyze a bottom-emitting metallic nanolaser with a cavity size smaller than one wavelength in three dimensions. We optimize the nanolaser performance by adjusting the thickness of SiNx insulator layer, pillar radius, p-cladding, and n-cladding layers. With a proper design, we can achieve the TE01 mode lasing with an extremely small effective mode volume of 0.135 (λ0/n)3 and an ultra low threshold gain of 247 cm-1. The nanolaser is integrated with a silicon-on-insulator waveguide through a bottom-connected grating coupler. By properly modifying the grating coupler period, fill factor, shift position, and grating height, a high coupling efficiency of 88.5% can be acquired.

Original languageEnglish
Article number7031861
Pages (from-to)2087-2092
Number of pages6
JournalJournal of Lightwave Technology
Volume33
Issue number10
DOIs
StatePublished - 15 May 2015

Keywords

  • Laser cavity resonators
  • nanolaser
  • optical waveguides
  • photonic integrated circuits
  • quantum well lasers
  • silicon-on-insulator

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