High power ytterbium fiber lasers at extremely long wavelengths by photonic bandgap fiber technology

Akira Shirakawa, Christina B. Olausson, Hiroki Maruyama, Ken-ichi Ueda, Jens K. Lyngsø, Jes Broeng

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Yb-doped fiber laser operating at the long-wavelength edge (1150–1200nm) of the broad gain spectrum has been investigated for yellow-orange sources. Power scaling in this region has been recently achieved by Yb-doped solid-core photonic bandgap fibers, in which the Yb gain profile is engineered by the sharp-cut, bandpass distributed filtering and therefore amplified spontaneous emission in the high-gain region (1030–1100nm) is strictly inhibited. We have recently demonstrated amplification with as high as 167W output power and 61% slope efficiency at 1178nm. The novel gain profiling technique by photonic bandgap fibers can be extended to other rare-earth doped fibers.
Original languageEnglish
JournalOptical Fiber Technology
Volume16
Issue number6
Pages (from-to)449-457
ISSN1068-5200
DOIs
Publication statusPublished - 2010
Externally publishedYes

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