White light generation in Dy3+-doped oxyfluoride glass and transparent glass-ceramics containing CaF2 nanocrystals

被引：111

作者：

Babu, P. ^{[1
,2
]}

Jang, Kyoung Hyuk ^{[1
]}

Rao, Ch. Srinivasa ^{[3
]}

Shi, Liang ^{[1
]}

Jayasankar, C. K. ^{[3
]}

Lavin, Victor ^{[4
,5
]}

Seo, Hyo Jin ^{[1
]}

机构：

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

[2] Govt Degree & PG Coll, Dept Phys, Wanaparthy 509103, India

[3] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India

[4] Univ La Laguna, MALTA Consolider Team, Dept Fis Fundamental & Expt Elect & Sistemas, E-38200 San Cristobal La Laguna, Santa Cruz Tene, Spain

[5] Univ La Laguna, Inst Univ Estudios Avanzados Atom Foton & Mol IUd, E-38200 San Cristobal La Laguna, Santa Cruz Tene, Spain

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 03期

关键词：

UP-CONVERSION; SPECTROSCOPIC PROPERTIES; ENERGY-TRANSFER; EMISSION; IONS; LUMINESCENCE; DY3+; TM3+; GREEN; RED;

D O I：

10.1364/OE.19.001836

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The radiative emission properties of the Dy3+ ions in an oxyfluoride glass and glass-ceramics have been studied for the generation of white light. The x-ray diffraction pattern of the glass-ceramics shows the formation of CaF2 fluorite-type nanocrystals in the glass matrix after a suitable thermal treatment of the precursor glass, whereas time-resolved optical measurements show the incorporation of the Dy3+ ions in the CaF2 nanocrystals. Intense white light has been observed when the samples are excited with 451 nm laser light. From the visible emission spectra, yellow to blue intensity ratios and the chromaticity color coordinates have been determined. All the color coordinates are found to lie in the white light region of the chromaticity color diagram. (C) 2011 Optical Society of America

引用

页码：1836 / 1841

页数：6

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