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.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0709112-011414 |
| Date | 09 July 2012 |
| Creators | Peng, Chih-Hao |
| Contributors | Der-Jun Jang, I-Min Jiang, Wan-Sun Tse, Andy Y. G. Fuh, Hsiung Chou, Cheng Tien, Ming-Chung Ho |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0709112-011414 |
| Rights | unrestricted, Copyright information available at source archive |
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