Diode-Pumped Ytterbium-Doped Sr-5(Po4)(3)F Laser Performance

    Authors

    C. D. Marshall; L. K. Smith; R. J. Beach; M. A. Emanuel; K. I. Schaffers; J. Skidmore; S. A. Payne;B. H. T. Chai

    Comments

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    Abbreviated Journal Title

    IEEE J. Quantum Electron.

    Keywords

    FLUORIDE FIBER LASER; YB-YAG LASER; MU-M; OPERATION; EMISSION; Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    The performance of the first diode-pumped Yb3+-doped Sr-5(PO4)(3)F (Yb:S-FAP) solid-state laser is discussed. An InGaAs diode array has been fabricated that has suitable specifications for pumping a 3 x 3 x 38 mm Yb:S-FAP rod, The saturation fluence for diode pumping was deduced to be 5.5 J/cm(2) for the particular 2.8 kW peak power diode array utilized in our studies, This is 2,5x higher than the intrinsic 2.2 J/cm(2) saturation fluence as is attributed to the 6.5 nm bandwidth of our diode pump array, The small signal gain is consistent with the previously measured emission cross section of 6.0 x 10(-20) cm(2), obtained from a narrowband-laser pumped gain experiment, Up to 1.7 J/cm(3) of stored energy density was achieved in a 6 x 6 x 44 mm Yb:S-FAP amplifier rod, In a free running configuration, diode-pumped slope efficiencies up to 43% (laser output energy/absorbed pump energy) were observed with output energies up to similar to 0.5 J per 1 ms pulse, When the rod was mounted in a copper block for cooling, 13 W of average power was produced with power supply limited operation at 70 Hz with 500 mu s pulses.

    Journal Title

    Ieee Journal of Quantum Electronics

    Volume

    32

    Issue/Number

    4

    Publication Date

    1-1-1996

    Document Type

    Article

    Language

    English

    First Page

    650

    Last Page

    656

    WOS Identifier

    WOS:A1996UE48400010

    ISSN

    0018-9197

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