Effect of Mg concentration on the domain reversal of Mg-doped LiNbO3

MgO-doped LiNbO3 (MgLN) crystal has been produced using the Czochralski method. The domain reversal characteristics of the MgO-doped LiNbO3 single crystals with different Mg doping levels have been investigated, and the switching field is found to decrease with the increasing of Mg concentration. The switching field for the domain reversal in the MgLN crystal doped with 6.5 mol % MgO was ∼4.6kV∕mm. This is about one-fifth of the switching field for the congruent crystal. The resistance of the poling MgLN crystals as a function of Mg concentration was measured, and the influence of doping Mg on domain reversion for Mg-doped LiNbO3 is discussed, and explain the physical mechanism of the polarization switching of the MgLN crystals.

[1]  T. Taira,et al.  Periodical poling characteristics of congruent MgO:LiNbO3 crystals at elevated temperature , 2003 .

[2]  Highly efficient blue light of femtosecond pulses by second-harmonic generation in periodically poled MgO:LiNbO3 , 2004 .

[3]  Shinichiro Sonoda,et al.  Second harmonic generation in electric poled X-cut MgO-doped LiNbO3 waveguides , 1997 .

[4]  K. Kitamura,et al.  Defect Structure Model of MgO-Doped LiNbO3 , 1995 .

[5]  K. Mizuuchi,et al.  Harmonic blue light generation in bulk periodically poled MgO:LiNbO3 , 1996 .

[6]  M. Fejer,et al.  Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO 3 , 1995 .

[7]  K. Mizuuchi,et al.  Electric-field poling in Mg-doped LiNbO3 , 2004 .

[8]  Donnerberg,et al.  Computer-simulation studies of extrinsic defects in LiNbO3 crystals. , 1991, Physical review. B, Condensed matter.

[9]  M. Fejer,et al.  Quasi-phase-matched 1.064-microm-pumped optical parametric oscillator in bulk periodically poled LiNbO(3). , 1995, Optics letters.

[10]  Martin M. Fejer,et al.  Backswitch poling in lithium niobate for high-fidelity domain patterning and efficient blue light generation , 1999 .

[11]  F. Izumi,et al.  Comparative study of defect structures in lithium niobate with different compositions , 1992 .

[12]  Guangyin Zhang,et al.  Defect chemistry analysis of the defect structure in Mg-doped LiNbO3 crystals , 1996 .

[13]  Intracavity frequency doubling of a diode-pumped 946-nm Nd:YAG laser with bulk periodically poled MgO LiNbO(3). , 1997, Optics letters.

[14]  S. Kurimura,et al.  Domain inversion in ferroelectric MgO:LiNbO3 by applying electric fields , 1996 .

[15]  Guangyin Zhang,et al.  Crystal growth and characteristics of 6.5 mol% MgO-doped LiNbO3 , 2004 .

[16]  Kazuhisa Yamamoto,et al.  Generation of ultraviolet light by frequency doubling of a red laser diode in a first-order periodically poled bulk LiTaO3 , 1997 .

[17]  J. Spray,et al.  Evidence for a late Triassic multiple impact event on Earth , 1998, Nature.

[18]  B. C. Grabmaier,et al.  Properties of undoped and MgO-doped LiNbO3; correlation to the defect structure , 1991 .

[19]  M. Wöhlecke,et al.  Defects in LiNbO3—I. experimental aspects , 1991 .

[20]  Martin M. Fejer,et al.  Periodic poling of magnesium-oxide-doped lithium niobate , 2002 .

[21]  K. Mizuuchi,et al.  Waveguide second-harmonic generation device with broadened flat quasi-phase-matching response by use of a grating structure with located phase shifts. , 1998, Optics letters.