Growth and Characteristics of Tunable Laser Crystals β-Ga2O3∶Cr
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第1期
论文作者：Deng Qun Wu Feng Xu Wusheng Xia Changtai Xu Jun Shi Hongsheng Zhang Jungang
Key words：β-Ga2O3; Cr; floating zone technique; tunable laser;
Abstract: 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.
Deng Qun1，Wu Feng2，Xu Wusheng1，Xia Changtai2，Xu Jun2，Shi Hongsheng1，Zhang Jungang2
(1.GE (China;
2.Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
3.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China)
Abstract: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.
Key words:β-Ga2O3; Cr; floating zone technique; tunable laser;
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