Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Crystal Growth of Yb:YCa4O(BO3)3 and Investigation of Spectroscopic and Thermal Properties

Yb:YCa4O(BO3)3 단결정 성장과 분광 및 열적 특성 연구

  • Published : 2002.01.01
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Abstract

Yb:$YCa_4O(BO_3)_3$ (Yb:YCOB) single crystal, in which the concentration of $Yb^{3+}$ ion 20 at%, was grown by the Czocharalski method using an iridium crucible under N2 atmosphere. The optimum growth parameters to get a high quality of single crystals were found to be 1.5∼2 mm/h of pulling rate and 10∼20 rpm of rotation rate. According to the results of spectroscopic properties, absorption edge of Yb:YCOB was 236 nm. Two strong absorption line due to $Yb^{3+}$ ions were observed at 900 and 975 nm. Thermal expansion coefficients of Yb:YCOB crystal along a, b and c crystallographic axes from 320 to 650 K were 12.1${\times}10^{-6}$/K, 5.9${\times}10^{-6}$/K, 12.9${\times}10^{-6}$/K, respectively. Specific heat was 0.162 $cal/g{\cdot}K$ at 330 K.

융액인상법으로 질소분위기 하에서 $Yb^{3+}$ 이온이 20at% 고용된 $Yb:YCa_4O(BO_3)_3$ (Yb:YCOB) 단결정을 이리듐 도가니를 사용하여 성장시켰다. 양질의 단결정을 성장시키기 위한 인상속도와 회전속도는 각각 1.5∼2 mm/h와 10∼20 rpm이었다. 분광물성 측정 결과, 흡수단이 236 nm에 있었으며, 전형적인 $Yb^{3+}$ 이온의 흡수 스펙트럼이 관찰되었다. Yb:YCOB의 열팽창계수는 320∼650 K의 측정범위에서 결정학적 축 a, b 그리고 c에 대해 12.1×$10^{-6}$ /K, 5.9${\times}10^{-6}$/K, 12.9${\times}10^{-6}$이었다. 비열은 330 K에서 0.162 $cal/g{\cdot}K$이었다.

Keywords

References

  1. A. Borsutzky, R. Burnger, Ch. Huang and R. Wallenstein, 'Harmonic and Sum-frequency Generation of Pulsed Laser Radiation in BBO, LBO and KDP,' Appl. Phy. B, 52 55-62 (1991) https://doi.org/10.1007/BF00405687
  2. A. J. W. Brown, M. S. Bowers, K. W. Kangas and C. H. Fisher, 'High-energy, High-efficiency Second-harmonic Ge-neration of 1064-nm Radiation in KTP,' Opt. Lett., 17 109-11 (1992) https://doi.org/10.1364/OL.17.000109
  3. P. F. Bordui, R. Blachman and R. G. Norwood, 'Improved optical Transmission of $KTiOPO_4$ Crystal Through Cerium-doping and Oxygen Annealing,' Appl. Phy. Lett., 61 1369-71 (1992) https://doi.org/10.1063/1.107540
  4. R. J. Bolt and M. V. D. Mooren, 'Single Shot Bulk Damage Threshold and Conversion Efficiency Measurements on Flux Grown $KTiOPO_4$(KTP),' Opt. Commun., 100 399-410 (1993) https://doi.org/10.1016/0030-4018(93)90602-2
  5. T. A. Driscoll, H. J, Hoffman, R. E. Stone and P. E. Perkins, 'Efficient Second-harmonic Generation in KTP Crystals,' J. Opt. Soc. Am., 3 683-86 (1986) https://doi.org/10.1364/JOSAB.3.000683
  6. C. Chen, B. Wu, A. Jiang and G. You, 'A New-type UItra-violet SHG Crystal: $\beta$-$BaB_2O_4$,' Sci. Sin., B28 235-43 (1985)
  7. C. Chen, Y. Wu, A. Jiang, B. Wu, G. You, R. Li and S. Lin, 'New Nonlinear-optical Crystal: Lithium Borate($LiB_3O_5$),' J. Opt. Soc. Am., 6 616-21 (1989) https://doi.org/10.1364/JOSAB.6.000616
  8. V. G. Dmitriev, G. G. Gurzadyan and D. N. Nikogosyan, 'Handbook of Nonlinear Optical Crystals,' pp. 53 Springer-Verlag, New York (1991)
  9. T. Sasaki and A. Tokotani, 'Growth of Large KDP Crystals for Laser Fusion Experiments,' J. Cryst, Growth, 99 820-26 (1990) https://doi.org/10.1016/S0022-0248(08)80033-4
  10. F. Xie, B. Wu, G. You and C. Chen, 'Characterization of $LiB_3O_5$ Crystal for Second-harmonic Generation,' Opt. Lett., 16 1237-39 (1991) https://doi.org/10.1364/OL.16.001237
  11. T. N. Khamaganova, V. K. Trunov and B. F. Dzhurinskil, 'The Crystal Structure of Calcium Samarium Oxide Borate $Ca_8Sm_2O(BO_3)_6$,' Russian J. Inorgan. Chem., 36 484-85 (1991)
  12. R. Norrestam, M. Nygren and J. O. Bovln, 'Structure Inves-tigation of New Calcium Rare-earth(R) Oxyborate with the Composition $SmCa_4O(BO_3)_3$,' Chem. Mater., 4 737-43 (1992) https://doi.org/10.1021/cm00021a044
  13. G. Aka, A. Kahn-Haradi, D. Vivien, J. M. Benitez, F. Salin and J. Godard, 'A New Nonlinear and Self-frequency Dou-bling Crystal with Congruent Melting $Ca_4NdO(BO_3)_3$ (GdCOB),' Eur. J. Solid State Inorsan. Chem., 33 727-36 (1996)
  14. M. Iwai, T. Kobayashi, H. Furuya, Y. Mori and T. Sasaki, 'Crystal Growth and Optical Characterization of Rare-earth (Re) Calcium Oxyborate $ReCa_4O(BO_3)_3$(Re=Y or Gd) as New Nonlinear Optical Material,' Jpn. J. Appl. Phys., 36L276-79 (1997) https://doi.org/10.1143/JJAP.36.276
  15. Y. M. Yu, A. Y. Ageyev, S. J. Jeong, W. K. Jang and K. S. Lim, 'CrystaI Grbwth of $YCa_4O(BO_3)_3$ and Preparation of Device for Second Harmonic Generation,' Kor. J. Crys-tallography, 11 [1] 16-21 (2000)
  16. H. J. Zhang, X. L. Meng, L. Zhu, C. Q. Wang, R. P. Cheng, W. T. Yu, S. J. Zhang, L. K. Sun, Y. T. Chow, W. L. Zhang, H. Wang and K. S. Wong, 'Growth and Laser Properties of Nd:$Ca_4YO(BO_3)_3$ Crystal,' Opt. Commun., 160 273-76 (1999) https://doi.org/10.1016/S0030-4018(98)00687-7
  17. W. K. Jang, Q. Ye, J. Eichenholz, B. H. T. Chai and M.Richardson, 'Second Harmonic Generation in Doped YCOB,' in Proc. Conf. Lasers and Electro-optics, San FIancisco, CA, 522-23 (1998)
  18. A. Brenier, 'Numerical Investigation of the CW End-pumped NYAB and $LiNbO_3$:Mg0:Nd Self-doubling Lasers,' Opt. Commun., 129 57-61 (1996) https://doi.org/10.1016/0030-4018(96)00119-8
  19. Q. Ye and B. H. T. Chai, 'Crystal Growth of $YCa_4O(BO_3)_3$ and its Orientation,' J. Cryst. Growth, 197 228-35 (1999) https://doi.org/10.1016/S0022-0248(98)00947-6
  20. R. C. Ropp, 'Luminescence and the Solid State,' pp 400-402 Elsevier, Amsterdam (1991)