Optical fiber amplifier network having a coherently combined output and high-power laser amplifier containing same
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United States of America Patent
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Aug 31, 1999
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N/A
app pub date -
Oct 3, 1997
filing date -
Oct 3, 1997
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Abstract
An optical fiber amplifier which receives a primary laser beam and generates a coherent amplified laser beam, includes an optical isolator which transmits the primary laser, a 3-dB coupler which receives the primary laser beam, which generates first and second laser beams, which receives first and second amplified laser beams, and which combines the amplified laser beams to thereby produce the coherent amplified laser beam, a phase controller operatively connected in parallel with the 3-dB coupler which controls the phase of each of the amplified laser beams, and first and second fiber amplifiers operatively connected to the 3-dB coupler, the fiber amplifiers receiving first and second laser beams and generating the amplified laser beams, respectively. A high power coherent laser amplifier utilizing several optical fiber amplifier networks connected to one another in parallel is also described.
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