Abstract
We demonstrate, for the first time to our knowledge, the strong recovery of the optical–optical slope efficiency of gamma-ray-irradiated Tm-doped fiber under 793 nm laser diode (LD) pumping. The fiber optical–optical slope efficiency, the fiber cladding absorption spectra, and the fluorescence spectra of the Tm-doped fiber before and after 500 Gy gamma-ray irradiation have been measured for comparison. It is found that the fiber optical–optical slope efficiency had significant degradation from 56.3% to 26.7% after irradiation and recovered to 40.8% after 15 h pump bleaching. Based on comparative analysis of fiber cladding absorption spectra among pristine fiber, irradiation, and bleaching, the reasons for the strong recovery have also been discussed.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Ying-bin Xing, Nan Zhao, Lei Liao, Yi-bo Wang, Hai-qing Li, Jing-gang Peng, Lv-yun Yang, Neng-li Dai, and Jin-yan Li
Opt. Express 23(19) 24236-24245 (2015)
Ying-Bin Xing, Yin-Zi Liu, Nan Zhao, Rui-Ting Cao, Yi-Bo Wang, Yu Yang, Jing-Gang Peng, Hai-Qing Li, Lu-Yun Yang, Neng-Li Dai, and Jin-Yan Li
Opt. Lett. 43(5) 1075-1078 (2018)
N. Zhao, Y. B. Xing, J. M. Li, L. Liao, Y. B. Wang, J. G. Peng, L. Y. Yang, N. L. Dai, H. Q. Li, and J. Y. Li
Opt. Express 23(19) 25272-25278 (2015)