Infrared-to-visible upconversion flurescence of Er{sup 3+}/Yb{sup 3+}-codoped bismuthate glasses

Journal Article · Tue Mar 08 04:00:00 EST 2005 · Materials Research Bulletin

OSTI ID:20889745

Hongtao, Sun ^[1]; Shixun, Dai ^[2]; Shiqing, Xu ^[2]; Lei, Wen ^[2]; Lili, Hu ^[2]; Zhonghong, Jiang ^[2]

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1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China) and Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China)
2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

Er{sup 3+}/Yb{sup 3+}-codoped bismuthate glasses for developing potential upconversion lasers have been fabricated and characterized. The optimal Yb{sup 3+} doping content was investigated in the glasses with different Yb{sup 3+}-Er{sup 3+} concentration ratios and the optimal Yb{sup 3+}-Er{sup 3+} concentration ratio is 5:1. Under 975 nm excitation, intense green and red emissions centered at 525, 546 and 657 nm, corresponding to the transitions {sup 2}H{sub 11/2} {yields} {sup 4}I{sub 15/2}, {sup 4}S{sub 3/2} {yields} {sup 4}I{sub 15/2} and {sup 4}F{sub 9/2} {yields} {sup 4}I{sub 15/2}, respectively, were observed at room temperature. The quadratic dependence of the 525, 546 and 657 nm emissions on excitation power indicates that a two-photon absorption process occurs under 975 nm excitation.

• OSTI ID: 20889745
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONCENTRATION RATIO
DOPED MATERIALS
ERBIUM IONS
EXCITATION
GLASS
LUMINESCENCE
OPTICAL PROPERTIES
PHOTONS
TEMPERATURE RANGE 0273-0400 K
YTTERBIUM IONS