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DF: Dielektrische Festkörper
DF 10: Electric, Electromechanical and Optical Properties I
DF 10.3: Talk
Thursday, March 30, 2006, 15:30–15:50, M{\"U}L Elch
Fabrication of embedded waveguides in LiNbO3 by radiation damage — •K. Peithmann1, M.-R. Zamani-Meymian1, M. Haaks1, K. Maier1, B. Andreas2, K. Buse2, and H. Modrow2 — 1Helmholtz-Institut für Strahlen- und Kernphysik, — 2Physikalisches Institut, Bonn, Germany
Irradiation of LiNbO3 with low-mass,
high-energy ions as 40 MeV 3He (range in LiNbO3 ≈
0.6 mm) creates strong, permanent refractive-index changes: The
ordinary refractive index no is decreased and the
extraordinary refractive index ne is increased in the
regions where the ions are transmitted through the material.
Characteristic dependences of these changes on the ion dose and
their thermal stability are measured, and the feasibility of
fabrication of embedded waveguides (size ≈
30 µm) using spatially modulated ion distributions is demonstrated.
∗Supported by the Deutsche Forschungsgemeinschaft (FOR 557)