Coherent combining of pulsed fiber amplifiers in the nonlinear chirp regime with intra-pulse phase control

Opt Express. 2012 Mar 26;20(7):7422-35. doi: 10.1364/OE.20.007422.

Abstract

Two high pulse contrast (> 95 dB) polarization maintaining all-fiber amplifier chains were coherently combined to generate 0.42 mJ, 1 ns 25 kHz pulses with 79% efficiency despite 38 radians of intra-pulse phase distortion. A recursive intra-pulse phase compensation method was utilized to correct for the large nonlinear chirp providing a path for improved coherent waveform control of nanosecond pulse trains.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amplifiers, Electronic*
  • Equipment Design
  • Equipment Failure Analysis
  • Fiber Optic Technology / instrumentation*
  • Lasers*
  • Nonlinear Dynamics