Effects of ion clustering and excited state absorption on the performance of Ho-doped fiber lasers

Title
Effects of ion clustering and excited state absorption on the performance of Ho-doped fiber lasers
Authors
이상배이관일배나래Jiachen Wang
Issue Date
2019-05
Publisher
Optics express
Citation
VOL 27, NO 10-14297
Abstract
The effects of ion clustering and excited state absorption occurring in holmiumdoped fiber lasers are investigated experimentally and theoretically. It is found that the slope efficiencies of holmium-doped fiber lasers are reduced by inhomogeneous upconversion associated with the clustering of Ho3+ ions. Via theoretical analysis based upon Judd– Ofelt theory, it is also found that the effect of excited state absorption on the performance of Hodoped fiber lasers is negligible, a fact indicating that ion clustering is the dominant cause of the lower-than-expected slope efficiencies observed in holmium-doped fiber lasers. We argue that ion clustering is an intrinsic flaw of holmium-doped fibers and is difficult to eliminate, because our research efforts are based on commercially available low-concentration fiber, which is fabricated with state-of-the-art techniques.
URI
http://pubs.kist.re.kr/handle/201004/69446
ISSN
1094-4087
Appears in Collections:
KIST Publication > Article
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