Structure defects and optical damage resistance in doubly doped In : Nd : LiNbO3 crystal waveguide substrates

摘要

A series of In:Nd:LiNbO3 crystals were grown by Czochralski technique and were made into waveguide substrates. The optical damage resistance of the In:Nd:LiNbO3 waveguide substrates was characterized by measurement of the holographic method. The optical damage resistance of In (3.0mol %):Nd:LiNbO3 was much higher than that of other In:Nd:LiNbO3. The ultraviolet-visible (UV-Vis) absorption spectra the In:Nd:LiNbO3 crystals were measured and investigated. The structure defects were discussed in this paper to explain the enhance of the optical damage resistance in the In:Nd:LiNbO3 crystals. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. [References: 22]