Volume 11 Issue 4
Jul.  2018
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Article Contents
WU Wen-di, YU Ting, TAO Meng-meng, LI Xing-ji, YE Xi-sheng. Experimental investigation of gamma-ray irradiation effect on Tm-doped fibers[J]. Chinese Optics, 2018, 11(4): 610-614. doi: 10.3788/CO.20181104.0610
Citation: WU Wen-di, YU Ting, TAO Meng-meng, LI Xing-ji, YE Xi-sheng. Experimental investigation of gamma-ray irradiation effect on Tm-doped fibers[J]. Chinese Optics, 2018, 11(4): 610-614. doi: 10.3788/CO.20181104.0610

Experimental investigation of gamma-ray irradiation effect on Tm-doped fibers

doi: 10.3788/CO.20181104.0610
Funds:

the Hundred-Talent Program of the Chinese Academy of Sciences 1505521XR0

the Foundation of the National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment 6142910030613

More Information
  • Corresponding author: YE Xi-sheng, E-mail:xsye@siom.ac.cn
  • Received Date: 2017-12-16
  • Rev Recd Date: 2018-02-05
  • Publish Date: 2018-08-01
  • In order to realize the space application of 2 μm thulium-doped fiber laser, the experimental study of γ-ray irradiation effect is carried out for typical commercial Tm-doped fiber(TDF). Using a gamma ray of 60Co, the irradiation effect of a total dose of 9.0 krad(Si) and a dose rate of 0.5-3.0 rad/s is performed on a 2 μm fiber laser constructed from 5 groups of the same TDF samples batch of SM-TDF-10P/130-HE produced by Nufern. The measurement results show that the light emission performance of TDF greatly attenuated during irradiation, and the attenuation amplitude increases with the increase of the dose rate. By comparing the absorption spectra of the TDF sample before and after irradiation, it is found that the absorption peak of the 793 nm pump light disappeared with the irradiation of the total dose of 9 krad(Si). The above-mentioned irradiated TDF sample is subjected to a 793 nm pump photobleaching test for 2 hours, and no performance recovery is observed. It can be seen that the space radiation performance of typical Tm-doped fiber has to be improved for space applications.
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