Infrared luminescence and amplification properties of Bi-doped GeO2−Ga2O3−Al2O3 glasses

Infrared luminescence and amplification properties of Bi-doped GeO2−Ga2O3−Al2O3 glasses

Bi, Ga, and Al codoped germanium glass was prepared and its optical properties were investigated by absorption, photoluminescence excitation (PLE), and photoluminescence spectra. Two active centers which occupy strong and weak crystal field environment are identified by using the PLE spectrum. The t...

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Veröffentlicht in:Journal of applied physics 2008-05, Vol.103 (10)
Hauptverfasser: Zhou, Shifeng, Dong, Huafang, Zeng, Heping, Hao, Jianhua, Chen, Jingxin, Qiu, Jianrong
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creator Zhou, Shifeng
Dong, Huafang
Zeng, Heping
Hao, Jianhua
Chen, Jingxin
Qiu, Jianrong
description Bi, Ga, and Al codoped germanium glass was prepared and its optical properties were investigated by absorption, photoluminescence excitation (PLE), and photoluminescence spectra. Two active centers which occupy strong and weak crystal field environment are identified by using the PLE spectrum. The tunable and ultrabroadband luminescence properties are originated from electron transitions of these two active centers. Internal optical gain around 1300 and 1560 nm has been detected. The wavelength-dependent internal gains excited with 808 and 980 nm laser diodes show different characteristics, and the relative flat optical amplification can be realized by choosing 980 nm pumping.
doi_str_mv 10.1063/1.2917303
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title Infrared luminescence and amplification properties of Bi-doped GeO2−Ga2O3−Al2O3 glasses
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