Upconversion Luminescence with Adjustable Multi-Color in Rare Earth Co-Doped Transparent Oxyfluoride Glasses

Author

Song, Zhiguo ; Li, Chen ; Li, Yongjin ; Zhou, Dacheng ; Yang, Zhengwen ; Yin, Zhaoyi ; Yu, Xue ; Wang, Rongfei ; Xu, Yuanyuan ; Qiu, Jianbei

Author_Institution

Sch. of Mater. Sci. & Technol., Kunming Univ. of Sci. & Technol., Kunming, China

fYear

2012

fDate

21-23 May 2012

Firstpage

1

Lastpage

3

Abstract

Transparent oxyfluoride glasses with highly efficient upconversion (UC) luminescence were developed in the 47.4SiO₂-19Al₂O₃- 28.4CaF₂- xTbF₃- 0.1TmF₃- 3.2YbF₃- (2-x)GdF₃ composition, in mol%. The colors of upconversion luminescence could be tuned easily by adjusting the excitation power of laser and concentration of doped rare earth ions simultaneously. The relationship between the emission intensity of Tb³⁺/Tm³⁺/Yb³⁺ - codoped oxyfluoride glasses and the excitation pump power revealed that three-photon and two-photon absorption predominated in the conversion process from the infrared into blue and red luminescence, respectively. And a novel UC mechanism of red emission from Tm³⁺ is proposed and discussed.

Keywords

aluminosilicate glasses; calcium compounds; fluorescence; gadolinium compounds; infrared spectra; photoluminescence; terbium compounds; thulium compounds; transparency; two-photon spectra; ytterbium compounds; SiO₂-Al₂O₃-CaF₂-TbF₃-TmF₃-YbF₃-GdF₃; adjustable multicolor; blue luminescence; doped rare earth ion concentration; emission intensity; excitation pump power; fluorescence; infrared luminescence; laser excitation power; photoluminescence; rare earth codoped transparent oxyfluoride glasses; red emission; red luminescence; three-photon absorption; two-photon absorption; upconversion luminescence; Color; Glass; Ions; Laser excitation; Luminescence; Power lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics (SOPO), 2012 Symposium on

Conference_Location

Shanghai

ISSN

2156-8464

Print_ISBN

978-1-4577-0909-8

Type

conf

DOI

10.1109/SOPO.2012.6270543

Filename

6270543