Up-conversion luminescence properties and energy transfer of Er ³⁺ /Yb ³⁺ co-doped oxyfluoride glass ceramic containing CaF ₂ nano-crystals

Abstract

Ma Chen-Shuo(马辰硕) a) , Jiao Qing(焦 清) a) , Li Long-Ji(李龙基) a) , Zhou Da-Cheng(周大成) a) , Yang Zheng-Wen(杨正文) a)b) , Song Zhi-Guo(宋志国) a)b) , and Qiu Jian-Bei(邱建备) a)b) † a)

Determination of charge-compensated C 3υ (II) centers for Er3+ ions in CdF2 and CaF2 crystals*

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] Weakly interacting dopants with rare-earth ions are favourable for the possibility of production of the compact laser. [10][11][12][13] In particular, the case of Er 3+ is of considerable interest, [14][15][16][17][18][19][20][21] since it has been found that the visible and infrared photoluminescence spectra of Er 3+ ions with low concentration in MF 2 -type fluorides are closely related to the different charge compensation centers, mainly resulting from the modification of local site symmetry and local lattice distortion.…”