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Photodarkening rate in Yb-doped silica fibers.
Koponen, Joona; Söderlund, Mikko; Hoffman, Hanna J; Kliner, Dahv A V; Koplow, Jeffrey P; Hotoleanu, Mircea.
Afiliação
  • Koponen J; Liekki Corporation, Sorronrinne 9, FIN-08500 Lohja, Finland. joona.koponen@liekki.com
Appl Opt ; 47(9): 1247-56, 2008 Mar 20.
Article em En | MEDLINE | ID: mdl-18709071
ABSTRACT
Yb-doped fibers are widely used in laser applications requiring high average output powers and high-peak-power pulse amplification. Photodarkening (PD) is recognized as one limiting factor in these fibers when pumped with high-intensity radiation. We describe an approach for performing quantitative PD studies of fibers, and we present measurements of the rate of PD in Yb-doped single-mode fibers with varying inversion levels. The method is applicable to large-mode-area fibers. We observed a seventh-order dependence of the PD rate on the excited-state Yb concentration for two different fibers; this result implies that PD of a Yb-doped fiber source fabricated using a particular fiber will be strongly dependent on the configuration of the device.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Appl Opt Ano de publicação: 2008 Tipo de documento: Article País de afiliação: Finlândia
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Appl Opt Ano de publicação: 2008 Tipo de documento: Article País de afiliação: Finlândia