Investigation of the mechanisms of upconversion luminescence in Ho3+ doped CaF2 crystals and ceramics upon excitation of 5I7 level

被引：29

作者：

Lyapin, A. A. ^{[1
,2
]}

Ryabochkina, P. A. ^{[1
]}

Chabushkin, A. N. ^{[1
]}

Ushakov, S. N. ^{[3
]}

Fedorov, P. P. ^{[3
]}

机构：

[1] Ogarev Mordovia State Univ, Saransk, Russia

[2] Kazan Fed Univ, Kazan, Russia

[3] Russian Acad Sci, Inst Gen Phys, Moscow, Russia

来源：

JOURNAL OF LUMINESCENCE | 2015年 / 167卷

关键词：

Upconversion luminescence; Infrared (IR) visualizer; Calcium fluoride; Crystal; Ceramics; Holmium ions; PAR TRANSFERT DENERGIE; UN TUNGSTATE MIXTE; ND-YAG CERAMICS; OPTICAL-PROPERTIES; IONS; FLUORESCENCE; SPECTROSCOPY; CAF2-HO-3+; FLUORIDE; HO-3+;

D O I：

10.1016/j.jlumin.2015.06.011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The mechanisms of upconversion luminescence of CaF2:Ho crystals and ceramics from F-5(3), S-5(2)(F-5(4)), F-5(5) and I-5(6) levels upon excitation of I-5(7) level of Ho3+ ions were investigated. Different mechanisms are responsible for the populating and depletion of the energy levels of Ho3+ ion in CaF2:Ho crystals and ceramics upon excitation of I-5(7) level. The upconversion luminescence from F-5(3), F-5(5), and I-5(6) levels in CaF2:Ho crystals and ceramics is explained by energy transfer upconversion processes. Our results also confirmed that both excited-state absorption and energy transfer upconversion are responsible for the populating of S-5(2)(F-5(4)) level. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：120 / 125

页数：6

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