光学学报, 1999, 19 (12): 1689, 网络出版: 2006-08-09
800nm激发下AlF3基氟化物玻璃中高掺杂Er3+的上转换光谱性质
Upconversion Fluorescence Spectroscopy in AlF3-Based Fluoride Glass with High Erbium Dopant Level Under 800 nm Excitation
摘要
在800nm激光二极管激发下, 研究高掺杂Er3+(摩尔比大于3%)的AlF3基(AYF、 AZF)玻璃的红外-可见上转换发光性质。 在AYF玻璃中, 550nm绿光上转换的最佳Er3+掺杂摩尔比为6%, 而在AZF玻璃中为12%。 随着Er3+掺杂量的增加, 红光与绿光上转换发光强度比(Ir/Ig)增加。 这被认为与两个Er3+离子(一个在4I9/2态、 另一个在4S3/2态)的交叉弛豫过程有关。 同时由于此交叉弛豫作用, 上转换红光发射强度I∝Pex1.6。
Abstract
Infrared to visible frequency upconversion fluorescence spectroscopy in high Er3+-doped AlF3-based fluoride glass, excited at 800 nm, is experimentally investigated. In AYF glass, the optimum Er3+ content for 550 nm emission is about at 6% mol ratio, which is 12% mol ratioin AZF glass. With the increasing of Er3+content, the intensity ratios of the red emission to the green emission (Ir/Ig) is increased in AYF and AZF glasses, and the red emission intensity in these glasses depends on (Pex)1.6. They are mainly due to a cross-relaxation process between two erbium ions, one in the 4S3/2 and the other in the 4I9/2.
张龙, 张军杰, 祁长鸿, 林凤英, 胡和方. 800nm激发下AlF3基氟化物玻璃中高掺杂Er3+的上转换光谱性质[J]. 光学学报, 1999, 19(12): 1689. 张龙, 张军杰, 祁长鸿, 林凤英, 胡和方. Upconversion Fluorescence Spectroscopy in AlF3-Based Fluoride Glass with High Erbium Dopant Level Under 800 nm Excitation[J]. Acta Optica Sinica, 1999, 19(12): 1689.
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