Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
권호 표지

Crystal growth and optical properties of near-stoichiometric $Zn:LiNbO_3$ fiber single crystal by ${\mu}-PD$ method

${\mu}-PD$ 법으로 성장시킨 near-stoichiometric 조성 $Zn:LiNbO_3$ fiber 단결정 성장 및 광손상 특성

  • Lee, H.J. (Department of Advanced Materials Engineering, Sungkyunkwan University) ;
  • Shur, J.W. (Department of Advanced Materials Engineering, Sungkyunkwan University) ;
  • Shin, T.I. (Department of Advanced Materials Engineering, Sungkyunkwan University) ;
  • Song, W.Y. (Sungkyunkwan Advanced Institute of Nanotechnology(SAINT), Sungkyunkwan University) ;
  • Yoon, D.H. (Department of Advanced Materials Engineering, Sungkyunkwan University)
  • 이호준 (성균관대학교 신소재공학과) ;
  • 서중원 (성균관대학교 신소재공학과) ;
  • 신동익 (성균관대학교 신소재공학과) ;
  • 송원영 (성균나노과학기술원) ;
  • 윤대호 (성균관대학교 신소재공학과)
  • Published : 2006.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

ZnO-doped near-stoichiometric $LiNbO_3$ single crystals of $0.8{\sim}1.0mm$ diameter and $30{\sim}35mm$ length were grown by the micro-pulling down (U-PD) method. The structure of the grown crystals was confirmed by powder x-ray diffraction (XRD) patterns. Electron probe micro analysis (EPMA) showed that Zn ions were homogeneously incorporated In grown crystals. The threshold in ZnO doping level was confirmed that an abrupt change in the features of $OH^-$ absorption band as doping level reaching about 2 mol%.

Micro-pulling down$({\mu}-PD)$법을 이용하여 직경 $0.8{\sim}1.0mm$, 길이 $30{\sim}35mm$의 ZnO가 첨가된 near-stoichiometric $LiNbO_3$, 단결정을 성장하였다. 성장된 결정의 결정구조를 powder x-tay diffraction(XRD) patterns으로 확인하였고, electron probe micro analysis(EPMA)를 이용하여 결정내 Zn 이온들이 균일하게 분포되었음을 확인하였다. 또한 2 mol% 이상의 ZnO 첨가시 $OH^-$ 흡수밴드의 특성이 크게 변화함을 관찰함으로써 ZnO 첨가량에 일치한 역치(threshold)가 존재함을 확인하였다.

Keywords

References

  1. T.Y. Fan, A. Cordova-Plaza, M.J.F. Digonnet, R.L. Byer and H.J. Shaw, 'Nd: MgO : $LiNbO_{3}$ spectroscopy and laser devices', Opt. Am. B 3 (1986) 140
  2. T. Kawaguchi, D.H. Yoon, M. Minakata, Y. Okada, M. Imaeda and T. Fukuda, 'Growth of high crystalline quality $LiNbO_{3}$ thin films by a new liquid phase epitaxial technique from a solid-liquid coexisting melt', J. Crystal Growth 152 (1995) 87 https://doi.org/10.1016/0022-0248(95)00081-X
  3. R. Nevada, G. Lifante, G.A. Torchia, J.A. Sanz-Garcia and F. Taque, 'Concentration dependence of refractive index in Zn-doped $LiNbO_{3}$ crystals', Opt. Mater. 11 (1998) 35 https://doi.org/10.1016/S0925-3467(98)00025-1
  4. Y. Furukawa, K. Kitamura, S. Takekawa, A. Miyamoto, M. Terao and N. Suda, 'Photorefraction in $LiNbO_{3}$ as a function of [Li]/[Nb] and MgO concentrations', Appl. Phys. Lett. 77 (16) (2000) 2494 https://doi.org/10.1063/1.1318721
  5. D.H. Yoon, I. Yonenaga, T. Fukuda and N. Ohnishi, 'Crystal growth of dislocation-free $LiNbO_{3}$ single crystals by micro pulling down method', J. Crystal Growth 142 (1994) 339 https://doi.org/10.1016/0022-0248(94)90342-5
  6. D.H. Yoon and T. Fukuda, 'Characterization of $LiNbO_{3}$ micro single crystals grown by micro-pulling down method', J. Crystal Growth 144 (1994) 201 https://doi.org/10.1016/0022-0248(94)90456-1
  7. W.S. Yang and D.H. Yoon, 'Growth and photoluminescence properties of Er: Mg : $LiNbO_{3} single crystal fibers by${\mu}-PD$ method', J. Korea Association of Crystal Growth 10(6) (2000) 389
  8. B.O. Kim, B.K. Kim, J.K. Yoon and J.H. Ro, 'A study on the optical damage in $LiNbO_{3}$ : Mg single crystal grown by CZ method', J. Korea Association of Crystal Growth 5(1) (1995) 1
  9. X.H. Zhen, H.T Li, L,C. Zhao and Y.H. Xu, 'Structure and optical damage resistance of Zn: Er : $LiNbO_{3}$ waveguides', Meter. Sci. Eng. B103 (2003) 135
  10. K.H. Kim, K.B. Shim and K.H. Auh, 'The effect of ZnO additions on the characteristics of $LiNbO_{3}$ single crystals', Materials Letters 55 (2002) 116 https://doi.org/10.1016/S0167-577X(01)00632-2