title: Amplification of nanosecond pulses to megawatt peak power levels in Tm3+-doped photonic crystal fiber rod.
abstract: We report amplification of sub-10-100 ns pulses with repetition rates from 1 to 20 kHz in a rod-type thulium-doped photonic crystal fiber with 80 μm core diameter. The rod is pumped with a 793 nm laser diode and produces the highest peak power at 1 kHz repetition rate with 6.5 ns pulse duration and more than 7 W average output power. This result exemplifies the potential of this fiber design to scale pulse peak powers and pulse energies to the megawatt and multi-millijoule range in the 2 μm wavelength regime.
authors: CREOL, The College of Optics and Photonics, Orlando, Florida 32816, USA. christian.gaida@uni‑jena.de
authors: Christian
authors: C
authors: Gaida
authors: Martin
authors: M
authors: Gebhardt
authors: Pankaj
authors: P
authors: Kadwani
authors: Lasse
authors: L
authors: Leick
authors: Jes
authors: J
authors: Broeng
authors: Lawrence
authors: L
authors: Shah
authors: Martin
authors: M
authors: Richardson