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    User name Yi Qiang

    Log entry time 15:13:33 on February 13, 2009

    Entry number 260917

    This entry is a followup to: 260890


    keyword=More Rutgers COMET test with new fiber

    I received the two new fibers from Newport this afternoon, then I did a
    comparison test with the UVa fiber. The output through the new jump fiber
    seems identical with the UVa fiber, so it is clear that the crystal has
    less light output than before. I also recorded the laser driving voltage
    and observed an average 2% increase compared to the data I got when the
    laser was brand new:
    10A: 2.46W 1.69V (was 1.67V)
    15A: 6.53W 1.76V (1.74V)
    20A: 10.6W 1.84V (1.80V)
    25A: 14.7W 1.91V (1.87V)
    30A: 18.7W 1.98V (1.93V)
    34A: 21.9W 2.04V (1.98V)

    A copy of this log entry has been emailed to: jpchen