title: High-gain photonic crystal fiber regenerative amplifier.
abstract: We have demonstrated a photonic crystal fiber-based regenerative amplifier at 1.078 microm. The input signal pulse energy is 20 pJ in a 12 ns pulse at a 3 kHz repetition rate. At 8.6 W of input pump power, the amplified output pulse energy is 157 microJ, yielding a gain of 69 dB. To our knowledge, this is the highest gain achieved in a fiber-based regenerative amplifier to date at any wavelength.
authors.affiliation: NIF and Photon Science Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA. sridharan1@llnl.gov
authors.forename: Arun Kumar
authors.initials: AK
authors.lastname: Sridharan
authors.forename: Paul
authors.initials: P
authors.lastname: Pax
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Messerly
authors.forename: Jay W
authors.initials: JW
authors.lastname: Dawson