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Cr,Yb:YAG晶体的光谱性质

徐晓东; 赵志伟; 宋平新; 周国清; 邓佩珍; 徐军   

  1. 中国科学院上海光学精密机械研究所 上海 201800
  • 收稿日期:2003-11-10 修回日期:2003-12-08 出版日期:2004-11-20 网络出版日期:2004-11-20

Spectroscopic Properties of Cr,Yb:YAG Crystals

XU Xiao-Dong; ZHAO Zhi-Wei; SONG Ping-Xin; ZHOU Guo-Qing; DENG Pei-Zhen; XU Jun   

  1. Shanghai Institute of Optics and Fine Mechanics; Chinese Academy of Sciences; Shanghai 201800; China
  • Received:2003-11-10 Revised:2003-12-08 Published:2004-11-20 Online:2004-11-20

摘要: 采用提拉法生长了原子分数为10%的Yb和不同掺杂浓度Cr的Cr,Yb:YAG激光晶体.测试了室温下晶体的吸收光谱、荧光光谱和荧光寿命.随着晶体中Cr离子掺杂浓度的增加,晶体在1.03μm处的吸收系数增大、荧光强度和荧光寿命下降,同时Yb3+→Cr4+能量转移效率增加、量子效率降低.确定了Cr,Yb:YAG晶体中Cr的最佳浓度值.

关键词: Cr, Yb:YAG晶体, 光谱性质, 能量转移, 浓度效应

Abstract: Cr,Yb:YAG laser crystals codoped with 10 at% Yb and different concentration Cr were grown by the Czochralski
method. The absorption spectra, fluorescence spectra, and fluorescence lifetimes of Cr,Yb:YAG crystals were investigated at room temperature. With
the increase of Cr concentration in Cr,Yb:YAG crystals, the absorption coefficient at 1.03μm increases, and the fluorescence intensity and
lifetime decrease, the energy transfer efficiency from Yb3+ to Cr4+ increases and the quantum efficiency in Cr,Yb:YAG crystals decreases. The
optimum Cr concentration for Cr,Yb:YAG crystals was estimated.

Key words: Cr, Yb:YAG crystal, spectroscopic property, energy transfer, concentration effect

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