Fiber laser beam processing apparatus
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United States of America Patent
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-
Oct 14, 2008
Grant Date -
Jul 19, 2007
app pub date -
Jan 17, 2007
filing date -
Jan 17, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fiber laser beam processing apparatus is configured by a fiber laser oscillator, a laser power source unit, a laser beam injecting unit, a fiber transmission system, a laser beam irradiating unit, a processing table, etc. A portion of a fiber laser beam oscillated and outputted by the fiber laser oscillator is received by a photo diode for monitoring the power through a beam splitter. An output signal of the photo diode is sent to a laser power source unit. The power source unit receives the output signal of the photo diode as a feedback signal and controls a driving current or an excitation current to be supplied to a laser diode of a pumping unit such that the laser output of the fiber laser beam equals a set value.
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