β-Ga2O3∶Cr single crystals have potential applications for tunable laser. In β-Ga2O3 crystal structure Cr3+ ions are in octahedron other than tetrahedron. So the Cr3+ ions are influenced by low field of β-Ga2O3 that results the 4T2 to 4A2 transition and show broad emission around 690 nm. β-Ga2O3 single crystals doped with different Cr3+ concentrations were grown by floating zone technique. Their absorption spectra and fluorescence spectra were measured at room temperature. The values of field splitting parameter Dq and Racah parameter B were calculated based on the absorption spectra.
参考文献
| [1] | Vivien D;Viana B;Revcolevschi A et al.Optical properties of β-Ga2O3∶Cr3+ single crystals for tunable laser applications[J].Journal of Luminescence,1987,39:29. |
| [2] | Tomm Y.;Klimm D.;Fukuda T.;Reiche P. .Czochralski grown Ga2O3 crystals[J].Journal of Crystal Growth,2000(4):510-514. |
| [3] | Electron paramagnetic resonance characterization of Cr~(3+) impurities in a β-Ga_(2)O_(3) single crystal[J].Journal of Applied Physics,2003(6):3315-3319. |
| [4] | Gopal NO;Narasimhulu KV;Sunandana CS;Rao JL .EPR and optical absorption spectral studies of Cr3+ ions doped in nickel maleate tetrahydrate single crystals[J].Physica, B. Condensed Matter,2004(1/4):335-340. |
| [5] | Walsh C G;Donegan J F;Glynn T J et al.Luminescence from β-Ga2O3:Cr[J].Journal of Luminescence,1988,40-41:29. |
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