用提拉法生长了掺铬、钕的钆镓石榴石(Cr4+, Nd3+∶GGG)晶体, 研究了室温下的吸收光谱和荧光光谱性质, 以及晶体中Cr离子浓度对Nd离子光谱性质的影响. 应用Judd-ofelt理论计算了强度参数Ωt (t=2, 4, 6), 自发辐射跃迁几率、荧光分支比和辐射寿命等光谱参数. 应用McCumber理论计算了4F3/2→4I11/2能级跃迁的受激发射截面. 结果表明: Cr3+在300～900 nm之间较强地增加了吸收截面, 尤其是伴随Cr3+→Nd3+有效的能量转移. Cr4+在1.06 μm附近的吸收减弱了Nd离子的发射截面.
参考文献
| [1] | Morris J A;Pollock C R .Passive Q-switching of a diode-pumped and Nd: YAG laser with a saturable absorber[J].OPTICS LETTERS,1990,15(08):440. |
| [2] | Yankov P .Cr4+∶YAG Q-switching of Nd∶host laser oscillators [J][J].Journal of Physics D:Applied Physics,1994,27(06):1118. |
| [3] | Zhou S;Lee K K;Chen Y C .Monolithic self-Q-switched Cr, Nd∶YAG laser[J].Optics Letters,1993,18(07):511. |
| [4] | Chen W;Spariosu K;Stultz R et al.Cr4+∶GSGG saturable absorber Q-switch for the ruby laser[J].Optics Communications,1993,104(01):71. |
| [5] | Kuo Y K;Huang M F .Tunable Cr4+∶YSO Q-switched Cr∶LiCAF laser[J].IEEE Journal of Oceanic Engineering,1995,31(04):657. |
| [6] | DONG Jun,DENG Peizhen,XU Jun,CHEN Wei.Investigation of the Emission Cross-sections and the Spectra of (Cr4+, Yb3+): YAG Crystal[J].中国激光,2000(02):187-190. |
| [7] | Kuck S;Petermann K;Pohlmann U et al.Electronic and vibronic transitions of the Cr4+-doped garnets Lu3Al5O12,Y3Al5O12,Y3Ga5O12 and Gd3Ga5O12[J].Journal of Luminescence,1996,68:1. |
| [8] | 徐时清,杨中民,戴世勋,杨建虎,胡丽丽,姜中宏.掺Er3+重金属氧氟硅酸盐玻璃的光谱性质与Judd-Ofelt理论分析[J].中国稀土学报,2003(02):137-142. |
| [9] | Luo Zundu;Huang Yidong.Spectroscopic Physics of Solid-State Laser Materials[M].Fuzhou:Science and Technology Press of Fujian,2003:276. |
| [10] | Jiang Benxue;Zhao Zhiwei;Xu Jun et al.Room temperature absorption and emission properties of high average power solid state laser crystal Nd:GGG[J].Journal of the Synthetic Crystals,2004,33(04):581. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%