µJ-level Raman-assisted fiber optical parametric chirped-pulse amplification.

ABSTRACT

We experimentally demonstrate the amplification of chirped pulses in a fiber optical parametric chirped pulse amplifier up to 1 µJ. This high energy level originates from combined Raman and parametric processes in a specially designed solid core photonic bandgap fiber. Output pulses are recompressed up to 560 fs. These performances make this all-fiber system compatible with first stages of bulk amplification chains.