Infrared luminescence and amplification properties of Bi-doped GeO2−Ga2O3−Al2O3 glasses
作者： Shifeng Zhou , Huafang Dong , Heping Zeng , Jianhua Hao , Jingxin Chen
DOI: 10.1063/1.2917303
关键词: Infrared 、 Photoluminescence 、 Optoelectronics 、 Materials science 、 Photoluminescence excitation 、 Germanium 、 Optical pumping 、 Laser 、 Doping 、 Luminescence
摘要: Bi, Ga, and Al codoped germanium glass was prepared its optical properties were investigated by absorption, photoluminescence excitation (PLE), spectra. Two active centers which occupy strong weak crystal field environment are identified using the PLE spectrum. The tunable ultrabroadband luminescence originated from electron transitions of these two centers. Internal gain around 1300 1560 nm has been detected. wavelength-dependent internal gains excited with 808 980 laser diodes show different characteristics, relative flat amplification can be realized choosing pumping.
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