High-energy Mid-IR Fiber CPA system at ~2.78µm using single-mode operation of a coiled 46µm core low-NA Er:ZBLAN fiber

Abstract

We report development of the first large-core fiber CPA system operating in Mid-IR. Up to ~100µJ were obtained with ~500ps stretched femtosecond pulses after single-mode amplification in a coiled 46µm and ~0.07NA core Er:ZBLAN fiber.