Title page for etd-0709112-011414


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URN etd-0709112-011414
Author Chih-Hao Peng
Author's Email Address No Public.
Statistics This thesis had been viewed 5567 times. Download 1047 times.
Department Physics
Year 2011
Semester 2
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title Structural Properties and Two Photon Luminescence Study of Yb:YAG Single Crystal
Date of Defense 2012-06-12
Page Count 101
Keyword
  • Yb:YAG
  • Melt growth
  • Czochralski method
  • EXAFS
  • Two-photon Luminescense
  • Frequency up-conversion
  • Abstract High quality YbxY1-xAG (0≤x≤1) single crystals were grown by using the Czochralski method. The structural properties of YbxY1-xAG (0≤x≤1) single crystals were also investigated using the EXAFS method. Additionally, for the first time, EXAFS results were compared with XRD results. Moreover, without essential lattice structure transformation, YbxY1-xAG crystals can be found due to the varying of doping concentration in XRD measurements. However, EXAFS measurements indicated that the local fine structural variation around the Yb3+ ion depends on the Yb3+ concentration.
    This work also studies the two-photon luminescence spectra of a Yb3+ doped YAG crystals. To study the spectral performance of Yb:YAG crystal, intense green light (centered at about 544nm) was generated by the crystal upon excitation using a 973nm InGaAs LD pump source. The luminescence spectra were obtained for various Yb concentrations and the emission intensity were plotted versus Yb3+ concentration. The green emission light attributed to Yb3+ two-photon transition.
    Advisory Committee
  • Andy Y. G. Fuh - chair
  • Ming-Chung Ho - co-chair
  • Cheng Tien - co-chair
  • Der-Jun Jang - co-chair
  • Hsiung Chou - advisor
  • I-Min Jiang - advisor
  • Wan-Sun Tse - advisor
  • Files
  • etd-0709112-011414.pdf
  • indicate access worldwide
    Date of Submission 2012-07-09

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