Integrated Al2O3:Er3+ microring and distributed feedback lasers on silicon

Edward Bernhardi, Kerstin Worhoff, J. Bradley, R.M. de Ridder, Markus Pollnau

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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    Integrated rare-earth-ion-doped dielectric lasers have found numerous applications in the medical, scientific, military and industrial fields, thanks to their high stability, low noise, narrow linewidth emission and broad wavelength tunability. Its favorable optical properties and compatibility with existing silicon waveguide technology make rare-earth-ion-doped aluminum oxide (Al2O3) a very promising gain medium to realize such integrated lasers. Al2O3:Er3+ waveguide lasers are of interest due to their emission near 1.55 μm in the telecommunication C-band. The fabrication of low-loss Al2O3:Er3+ waveguides and internal optical gain over an 80-nm wavelength range with a peak gain of 2.0 dB/cm enabled the realization of various integrated Al2O3:Er3+ lasers on standard thermally oxidized silicon substrates. We report on the fabrication and performance of optically pumped channel waveguide ring and distributed feedback (DFB) lasers in Al2O3:Er3+. The low threshold ring-cavity lasers provide laser wavelength selection in the range 1530–1557 nm when varying the length of the output coupler from the ring. The DFB lasers exhibit output powers of more than 3 mW with slope efficiencies as high as 6.2% in single-frequency operation at 1545.2 nm with linewidths below 15 kHz. These performance data illustrate the significance of Al2O3:Er3+ as a laser gain medium in dense wavelength division multiplexing in telecommunication networks.
    Original languageUndefined
    Title of host publicationSymposium K: Rare earth doped materials for optical based technologies
    Place of PublicationStrasbourg
    PublisherEuropean Materials Research Society (E-MRS)
    Number of pages2
    ISBN (Print)not assigned
    Publication statusPublished - 7 Jun 2010
    EventRare earth doped materials for optical based technologies 2010 (Symposium K of the 2010 EMRS Spring Meeting) - Strasbourg, France
    Duration: 7 Jun 201011 Jun 2010

    Publication series

    NameE-MRS 2010 Spring Meeting
    PublisherEuropean Materials Research Society (E-MRS)


    ConferenceRare earth doped materials for optical based technologies 2010 (Symposium K of the 2010 EMRS Spring Meeting)


    • IR-73229
    • METIS-275649
    • Erbium
    • Integrated Optics
    • EWI-18461
    • On-chip laser
    • IOMS-APD: Active Photonic Devices
    • Aluminum oxide

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