Ultra-large core birefringent Yb-doped tapered double clad fiber for high power amplifiers

Andrey Fedotov, Teppo Noronen, Regina Gumenyuk, Vasiliy Ustimchik, Yuri Chamorovskii, Konstantin Golant, Maxim Odnoblyudov, Joona Rissanen, Tapio Niemi, Valery Filippov

    Research output: Contribution to journalArticleScientificpeer-review

    29 Citations (Scopus)
    172 Downloads (Pure)


    We present a birefringent Yb-doped tapered double-clad fiber with a record core diameter of 96 μm. An impressive gain of over 38 dB was demonstrated for linearly polarized CW and pulsed sources at a wavelength of 1040 nm. For the CW regime the output power was70 W. For a mode-locked fiber laser a pulse energy of 28 μJ with 292 kW peak power was reached at an average output power of 28 W for a 1 MHz repetition rate. The tapered double-clad fiber has a high value of polarization extinction ratio at 30 dB and is capable of delivering the linearly polarized diffraction-limited beam (M2 = 1.09).

    Original languageEnglish
    Pages (from-to)6581-6592
    Number of pages12
    JournalOptics Express
    Issue number6
    Publication statusPublished - 19 Mar 2018
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics


    Dive into the research topics of 'Ultra-large core birefringent Yb-doped tapered double clad fiber for high power amplifiers'. Together they form a unique fingerprint.

    Cite this