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On March 1, 2015, the Optical Society of America published a research plan on the irradiation characteristics of ytterbium-doped fiber lasers and erbium-doped fibers, which was supported
by the National High-tech Research and Development Program of China and the National Natural Science Foundation of China and the Director Fund of Wuhan National Laboratory for Optoelectronics.
With the advantages of high efficiency, excellent beam quality and strong reliability, thulium-doped fiber lasers and thulium-doped fiber amplifiers have a wide range of application prospects
in space communications, detection sensing, military countermeasures and medicine.
In these harsh applications, thulium-doped fibers need to exhibit excellent radiation resistance
.
Internationally, most of the research directions focus on the irradiation characteristics of ytterbium-doped fiber and erbium-doped fiber, and the anti-irradiation characteristics of thulium-doped fiber are rarely involved
.
Professor Li Jinyan, Professor Dai Nengli and doctoral student Xing Yingbin of the fiber laser technology team of Wuhan Optoelectronic National Laboratory took the lead in proposing the research on the irradiation characteristics of thulium fiber laser, and found that thulium-doped fiber has the characteristics of
pump bleaching.
A double-clad thulium-doped fiber with a core-to-package ratio of 10/130 was irradiated in a gamma radiation field with a total dose of 500 Gy and an irradiance rate of 250 Gy/h
.
After irradiation, the laser performance of thulium-doped fiber decreased significantly, the slope efficiency decreased from 56.
3% to 26.
7%, and the absorption of visible light and infrared light increased
significantly.
However, after 15 hours of continuous pumping of the pumping source, the laser performance has improved significantly, the slope efficiency has increased from 26.
7% to 40.
8%, and the absorption of visible light and infrared light has also decreased
.
This pumped bleaching property greatly expands the range of applications for active devices based on thulium-doped
fibers.
On March 1, 2015, the Optical Society of America published a research plan on the irradiation characteristics of ytterbium-doped fiber lasers and erbium-doped fibers, which was supported
by the National High-tech Research and Development Program of China and the National Natural Science Foundation of China and the Director Fund of Wuhan National Laboratory for Optoelectronics.
With the advantages of high efficiency, excellent beam quality and strong reliability, thulium-doped fiber lasers and thulium-doped fiber amplifiers have a wide range of application prospects
in space communications, detection sensing, military countermeasures and medicine.
In these harsh applications, thulium-doped fibers need to exhibit excellent radiation resistance
.
Internationally, most of the research directions focus on the irradiation characteristics of ytterbium-doped fiber and erbium-doped fiber, and the anti-irradiation characteristics of thulium-doped fiber are rarely involved
.
Professor Li Jinyan, Professor Dai Nengli and doctoral student Xing Yingbin of the fiber laser technology team of Wuhan Optoelectronic National Laboratory took the lead in proposing the research on the irradiation characteristics of thulium fiber laser, and found that thulium-doped fiber has the characteristics of
pump bleaching.
A double-clad thulium-doped fiber with a core-to-package ratio of 10/130 was irradiated in a gamma radiation field with a total dose of 500 Gy and an irradiance rate of 250 Gy/h
.
After irradiation, the laser performance of thulium-doped fiber decreased significantly, the slope efficiency decreased from 56.
3% to 26.
7%, and the absorption of visible light and infrared light increased
significantly.
However, after 15 hours of continuous pumping of the pumping source, the laser performance has improved significantly, the slope efficiency has increased from 26.
7% to 40.
8%, and the absorption of visible light and infrared light has also decreased
.
This pumped bleaching property greatly expands the range of applications for active devices based on thulium-doped
fibers.
