Performance of Ar+-milled Ti:Sapphire rib waveguides as single transverse-mode broadband fluorescence sources

C. Grivas, D.P. Shepherd, T.C. May-Smith, R.W. Eason, Markus Pollnau, A. Crunteanu, M. Jelinek

    Research output: Contribution to journalArticleAcademicpeer-review

    48 Citations (Scopus)
    90 Downloads (Pure)


    Rib waveguides have been fabricated in pulsed-laser-deposited Ti:sapphire layers using photolithographic patterning and subsequent Ar+-beam milling. Fluorescence output powers up to 300 W have been observed from the ribs following excitation by a 3-W multiline argon laser. Mode intensity profiles show high optical confinement and the measured beam propagation factors Mx2 and My2 of 1.12 and 1.16, respectively, indicate single transverse-mode fluorescence emission. Loss measurements using the self-pumped phase conjugation technique have yielded comparable values (1.7 dB/cm) for the ribs and the unstructured planar waveguide counterparts. The combination of optimum modal properties and strong optical confinement, together with sufficient levels of fluorescence output, make the single-moded Ti:sapphire rib waveguides a very interesting candidate as a fluorescence source for optical coherence tomography applications.
    Original languageUndefined
    Article number10.1109/JQE.2002.808149
    Pages (from-to)501-507
    Number of pages7
    JournalIEEE journal of quantum electronics
    Issue number3
    Publication statusPublished - 2003


    • IR-70079
    • Ion beam applications
    • Lithography
    • Laser ablation
    • optical tomography
    • Optical waveguides
    • loss measurement
    • rib waveguides
    • EWI-17545
    • IOMS-APD: Active Photonic Devices

    Cite this