中国激光, 2012, 39 (5): 0506001, 网络出版: 2012-04-13
Nd:Lu3Al5O12晶体光谱与激光性能研究
Spectrum and Laser Properties of Nd:Lu3Al5O12 Crystal
材料 Nd:LuAG晶体 吸收光谱 荧光光谱 激光性能 materials Nd:LuAG single crystal absorption spectrum fluorescence spectrum laser activity
摘要
采用提拉法生长Nd掺杂原子数分数为1%的高质量的Nd:Lu3Al5O12(Nd:LuAG)晶体。对晶体的光谱性能进行了表征。研究发现，Nd:LuAG晶体与相同掺杂浓度的Nd:YAG晶体均具有相似的峰形和峰位，但特征吸收峰和荧光峰均发生了1 nm的红移现象。Nd:LuAG晶体具有比Nd:YAG和NdGGG晶体更长的荧光寿命和更宽的吸收线宽。在抽运功率为900 mW的钛宝石激光器抽运下，Nd:LuAG晶体获得了420 mW的连续激光输出，斜率效率为47.5%，激光抽运阈值为22 mW。
Abstract
High quality Nd:Lu3Al5O12(Nd:LuAG) crystal doped with 1% Nd (atom fraction) is grown by the Czochralski method. The spectrum properties of the crystal are characterized. Compared with Nd:YAG with the same Nd concentration, Nd:LuAG single crystal has similar shape of absorption peak and fluorescence peak, but the position of peaks has 1 nm red-shift. Nd:LuAG single crystal has longer fluorescence lifetime and wider absorption line than Nd:YAG and NdGGG single crystals. Under Ti sapphire laser pumping with 900 mW power, the maximum output power, the slope efficiency, and the lasing threshold of Nd:LuAG crystal are 420 mW, 47.5% and 22 mW, respectively.
王晓丹, 徐晓东, 王静雅, 马春兰, 徐军. Nd:Lu3Al5O12晶体光谱与激光性能研究[J]. 中国激光, 2012, 39(5): 0506001. Wang Xiaodan, Xu Xiaodong, Wang Jingya, Ma Chunlan, Xu Jun. Spectrum and Laser Properties of Nd:Lu3Al5O12 Crystal[J]. Chinese Journal of Lasers, 2012, 39(5): 0506001.
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