High power single mode fiber laser system for wavelengths operating in 2 μm range
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United States of America Patent
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Jan 30, 2018
Grant Date -
Jun 9, 2016
app pub date -
May 3, 2011
filing date -
May 3, 2011
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Abstract
A high power fiber laser system is configured with a pump cascade and a laser cascade. The pump cascade includes a fiber amplifier provided with a MM core which is doped with ions of rare-earth element including either Er or Yb/Er. The MM core of fiber amplifier is configured with a double bottleneck-shaped cross section. The laser cascade has a fiber laser configured with a core which is doped with Tm ions. The pump light generated by the amplifier is coupled into the upstream end of the Tm laser.
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