Investigation of Photo-Darkening-Induced Thermal Load in Yb-Doped Fiber Lasers

Autor:	Yongshi Cheng, Luyun Yang, Yingbin Xing, Yehui Liu, Yibo Wang, Xianfeng Lin, Jinyan Li, Gui Chen, Nan Zhao, Ruiting Cao, Haiqing Li
Rok vydání:	2019
Předmět:	Materials science business.industry Doping Thermal load Temperature measurement Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Quantum defect Heat generation Fiber laser Optoelectronics Fiber Electrical and Electronic Engineering business
Zdroj:	IEEE Photonics Technology Letters. 31:809-812
ISSN:	1941-0174 1041-1135
DOI:	10.1109/lpt.2019.2906773
Popis:	We report on our investigation of photo-darkening (PD)-induced thermal load in Yb-doped fiber lasers and the effective suppression by H2-loading. Compared with a quantum defect, the contribution of heat produced by PD was evaluated, indicating PD may become the primary heat source. To reduce the heat generation, the effect of H2-loading on thermal load was quantitatively analyzed. The experimental results showed that 86% of PD loss was mitigated and 82% of PD-induced thermal load was eliminated by H2-loading. In contrast, due to the presence of extra heat source, only 14% heat decreased in the Ce-doped fiber at similar PD loss level. The results indicate that H2-loading is promising for further improving the stable operation of fiber lasers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ca7bb8c96a411f6d598bf79f7925eec https://doi.org/10.1109/lpt.2019.2906773 Zobrazit plný text záznamu