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Investigation of radiation induced static mode degradation in Yb-Ce co-doped pulsed fiber amplifiers.
- Source :
-
Optics & Laser Technology . Oct2022, Vol. 154, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • The radiation induced static mode degradation (SMD) was discovered and studied. • The threshold of SMD could be related with the composition of active fiber and increases with the increase of Ce. • When the Ce concentration increased by 35.5%, SMD threshold rose by 16% at most. We report on an experimental investigation of radiation induced static mode degradation in Yb-Ce co-doped pulsed fiber amplifiers. For investigating the impact of irradiation on beam quality, radiation-darkened fibers were irradiated by gamma rays. The laser properties of three types of fibers were investigated. With the pump power increased, static mode degradation appeared: M2 factor raised significantly and the output beam profile transformed from LP 01 into LP 11 shape without high-frequency component. The threshold of static mode degradation decreased with irradiation dose, and related to Yb-Ce co-doped fiber compositions. The doping of Ce benefits to the improvement of the static mode degradation threshold: in the case of the Ce concentration increasing by 35.5%, SMD threshold rose by 16% at most. [ABSTRACT FROM AUTHOR]
- Subjects :
- *YTTERBIUM
*ERBIUM
*GAMMA rays
*FIBERS
*RADIATION
*INVESTIGATION reports
Subjects
Details
- Language :
- English
- ISSN :
- 00303992
- Volume :
- 154
- Database :
- Academic Search Index
- Journal :
- Optics & Laser Technology
- Publication Type :
- Academic Journal
- Accession number :
- 157591680
- Full Text :
- https://doi.org/10.1016/j.optlastec.2022.108345