Investigation of single-mode vertical-cavity surface-emitting lasers with graphene-bubble dielectric DBR

Baolu Guan, Pengtao Li, Shamsul Arafin, Yazeed Alaskar, Kang L. Wang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


An inter-cavty contact single mode 850 nm VCSEL was fabricated with a graphene assisted self-assembly curved dielectric bubble Bragg mirror for the first time. Taking the advantage of graphene's uniform low surface energy, the low cost dielectric bubble DBR (Si3N4/SiO2) was deposited on top of the graphene/half-VCSEL structure via van der Waals Force (vdWF) without using any additional spacing elements and sacrificial layer release-etch process. The continuous-wave operating VCSELs with an aperture diameter of 7 μm exhibit single-mode output power of more than 1 mW with a slope efficiency of 0.2 W/A. The sidemode suppression ratios are >40 dB. This novel modification into the lasers can also be applied to a variety of other optoelectronic devices, such as resonance photodetecter and super narrow linewidth VCSEL.

Original languageEnglish
Pages (from-to)56-60
Number of pages5
JournalPhotonics and Nanostructures - Fundamentals and Applications
Publication statusPublished - 2018 Feb

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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