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Optical Transition, Excitation State Absorption, and Energy Transfer Study of Er 3+ , Nd 3+ Single‐Doped, and Er 3+ /Nd 3+ Codoped Tellurite Glasses for Mid‐Infrared Laser Applications
Author(s) -
Zheng Yanfeng,
Chen Baojiu,
Zhong Haiyang,
Sun Jiashi,
Cheng Lihong,
Li Xiangping,
Zhang Jinsu,
Tian Yue,
Lu Weili,
Wan Jing,
Yu Tingting,
Huang Libo,
Yu Hongquan,
Lin Hai
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04323.x
Subject(s) - materials science , laser , doping , excited state , absorption (acoustics) , infrared , analytical chemistry (journal) , attenuation coefficient , stimulated emission , absorption spectroscopy , optics , atomic physics , optoelectronics , chemistry , physics , composite material , chromatography
Nd 3+ , Er 3+ single‐doped and Nd 3+ /Er 3+ codoped tellurite glasses were prepared via a melt‐quenching technique, and their optical transition properties were studied in the framework of Judd–Ofelt theory. The differential excited state absorption cross section from 4 I 13/2 to 4 I 11/2 was obtained based on the McCumber theory; furthermore, the optical gain coefficient spectrum for 4 I 11/2 → 4 I 13/2 transition was calculated. The energy transfers 4 F 3/2 (Nd 3+ )+ 4 I 15/2 (Er 3+ )→ 4 I 9/2 (Nd 3+ )+ 4 I 9/2 (Er 3+ ) and 4 I 13/2 (Er 3+ )+ 4 I 9/2 (Nd 3+ )→ 4 I 15/2 (Er 3+ )+ 4 I 15/2 (Nd 3+ ) in the codoped sample were analyzed by using Föster–Dexter theory and Inokuti–Hirayama's model, respectively; meanwhile, the energy transfer rates for both the energy transfer processes were confirmed. The results indicated that Nd 3+ may be a good sensitizer for Er 3+ to obtain intense mid‐infrared emission, and that Nd 3+ /Er 3+ codoped tellurite glass may be a good candidate media for mid‐infrared lasers.