Low threshold monocrystalline Nd:(Gd,Lu)2O3 channel waveguide laser

Andreas Kahn, Sebastian Heinrich, Henning Kühn, Klaus Petermann, Jonathan D.B. Bradley, Kerstin Wörhoff, Markus Pollnau, Günther Huber

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    22 Citations (Scopus)
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    We report the first waveguide laser based on a rare-earth-doped sesquioxide. A 2 μm thick lattice matched Nd(0.5%):(Gd, Lu)2O3 film with a nearly atomically flat surface has been epitaxially grown on a Y2O3 substrate, using pulsed laser deposition. The film has been structured with reactive ion etching and a rib channel waveguide laser has been realized. Laser radiation at 1075 nm and 1079 nm has been observed under 820-nm pumping. The laser possesses a threshold power of about 0.8 mW and a preliminary slope efficiency of 0.5% versus incident pump power. A maximum output power of 1.8 mW has been obtained for 370 mW incident pump power.
    Original languageEnglish
    Pages (from-to)4412-4418
    Number of pages7
    JournalOptics express
    Issue number6
    Publication statusPublished - 4 Mar 2009


    • IOMS-APD: Active Photonic Devices
    • Neodymium
    • Integrated Optics devices
    • Rare earth and transition metal solid-state lasers
    • Lasers
    • Channeled
    • Waveguides


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