Publication Date:
2015-06-27
Description:
Oxyfluogermanate glasses with good thermal stability were prepared by melt-quenching method. The investigation of 2.7 μ m fluorescence spectra and energy transfer mechanism was performed pumped by an 808 nm laser diode. The 2.7 μ m radiative transition probability and emission cross section are 32.62 s −1 and 12.88 × 10 −21 cm 2 , respectively. The energy transfer parameters between 4 I 11/2 and 4 I 13/2 levels were calculated by Inokuti-Hirayama and Yokota-Tanimoto's model to further elucidate 2.7 μ m fluorescent behaviors. It is found that the energy transfer mechanism among Er 3+ is mainly dominated by dipole-dipole interactions. Results indicate that the prepared oxyfluogermanate glass is a promising candidate for mid-infrared laser applications.
Print ISSN:
0021-8979
Electronic ISSN:
1089-7550
Topics:
Physics
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