Optical spectroscopy of heavily Ho3+-doped BaY2F8 crystals

被引：20

作者：

Tsuboi, Taiju ^{[2
]}

Jang, Kyoung Hyuk ^{[1
]}

Polosan, Silviu ^{[2
,6
]}

Shimamura, Kiyoshi ^{[3
]}

Bettinelli, Marco ^{[4
,5
]}

Seo, Hyo Jin ^{[1
]}

机构：

[1] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

[2] Kyoto Sangyo Univ, Fac Engn, Kyoto 6038555, Japan

[3] Natl Inst Mat Sci, Optron Mat Ctr, Tsukuba, Ibaraki 3050044, Japan

[4] Univ Verona, Lab Solid State Chem, Dept Biotechnol, I-37134 Verona, Italy

[5] UdR Verona, INSTM, I-37134 Verona, Italy

[6] Natl Inst Mat Phys, Bucharest 77125, Romania

来源：

JOURNAL OF LUMINESCENCE | 2011年 / 131卷 / 04期

基金：

日本学术振兴会;

关键词：

BaY2F8; crystal; Ho3+ ion; Luminescence; Heavily doped; Excitation; Lifetime; LASER; LUMINESCENCE; EMISSION;

D O I：

10.1016/j.jlumin.2010.11.020

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The ultraviolet, visible, and near IR (0.8-2.4 mu m) luminescence spectra of BaY2F8 single crystals heavily doped with Ho3+ ions (10 and 30 mol%) have been investigated at room temperature and 12 K, together with the luminescence decay curves (up to 300 mu s) of the visible emission. Excitation in the visible region gives rise to very strong emission bands originating from the first I-5(7) level and located around 2070 nm. However the I-5(7) emission is not observed upon excitation at wavelengths shorter than 300 nm. The inter-ionic processes are found to shorten the decay times of the levels emitting in the visible region with respect to the corresponding radiative lifetimes. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：695 / 700

页数：6

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