O-band electrically injected quantum dot micro-ring lasers on on-axis (001) GaP/Si and V-groove Si

Yating Wan, Daehwan Jung, Justin Norman, Chen Shang, Ian Macfarlane, Qiang Li, M. J. Kennedy, Arthur C. Gossard, Kei May Lau, John E. Bowers

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We report statistical comparisons of lasing characteristics in InAs quantum dot (QD) micro-rings directly grown on on-axis (001) GaP/Si and V-groove (001) Si substrates. CW thresholds as low as 3 mA and high temperature operation exceeding 80 °C were simultaneously achieved on the GaP/Si template template with an outer-ring radius of 50 µm and a ring width of 4 μm, while a sub-milliamp threshold of 0.6 mA was demonstrated on the V-groove Si template with a smaller cavity size of 5-μm outer-ring radius and 3-μm ring width. Evaluations were also made with devices fabricated simultaneously on native GaAs substrates over a significant sampling analysis. The overall assessment spotlights compelling insights in exploring the optimum epitaxial scheme for low-threshold lasing on industry standard Si substrates.
Original languageEnglish (US)
Pages (from-to)26853-26860
Number of pages8
JournalOptics Express
Volume25
Issue number22
DOIs
StatePublished - Oct 30 2017
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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