描述了掺氧族离子(O2-,S2-,Se2-)NaCl晶体中(F+2)H心的制备过程,报道了氧族离子稳定的(F+2)H心的吸收光谱和发射光谱,测量了这些(F+2)H心的室温避光稳定性.研究表明,氧族离子对F+2心的稳定作用顺序为O2-＜Se2-＜S2-,而受这三种离子扰动的(F+2)H心的光谱峰位相对于纯F+2心的移动大小亦为这一顺序.这一顺序与它们相应元素的电子亲合能顺序相同(分别为1.47,2.02,2.07eV).从而,纠正了根据离子大小为预测的结果O2-＜S2-＜Se2-.本文结果对(F+2)H色心激光晶体材料的研究具有指导意义.研究还表明,随着离子半经的增大,生长出优质的掺杂晶体越来越困难.
The preparation procedures of(F2+)H centers in chalcogenide ions doped NaCl crystals are described,absorption and emission spectra are studied. The stability of these centers in the dark at room temperature is also mearsured.It is revealed that the increase of the stabilized effect of chalcogenide ions on F2+ centers is in the sequence of ions O2-,Se2-,S2-and that the increase of the shift magnitude of spectral positions based on these defects comparing with pure F2+ center is in the same sequence. The sequence is the same as the electron affinity sequence,While the electron affinity of the chalcogenide elements is 1.47,2.02,2.07eV,respectively.It is also experimentally found that with increase of the chalcogenide ion size,the growth of good quality doped crystal is achieved more difficultly.
参考文献
| [1] | Gellerman W .[J].Journal of Physics and Chemistry of Solids,1991,52:249. |
| [2] | Pinto J F;Georgiou E;Pollock C R .[J].Optics Letters,1986,11:519. |
| [3] | Wandt D;Gellerman W;Luty F .[J].Journal of Applied Physics,1987,61:864. |
| [4] | Lin B;Xu C;Wu J;Qiu J .[J].Acta Optica Sinica,1994,14:346. |
| [5] | Suzuki Y;Saitoh T;Ozawa K .[J].Japanese Journal of Applied Physics,1992,31:809. |
| [6] | Lin B;Xu C;Qiu J et al.[J].chinese J Laser,1996,25:308. |
| [7] | Fischer F;Grunding H;Hilsch R .[J].Zeitschrift für Physik,1996,189:79. |
| [8] | Mollmann K;Gellerman W .[J].Optics Letters,1994,19:490. |
| [9] | Lin B .[J].Optics Communications,1996,124:400. |
| [10] | Islam M N;Sundermann E R;Bar-Joseph I;Chang T .[J].Applied Physics Letters,1989,54:1203. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%