High-energy low-temporal-coherence instantaneous broadband pulse system

Abstract

We propose and experimentally demonstrate a scheme of achieving high-energy low-temporal-coherence instantaneous broadband light pulses. The low-temporal-coherence instantaneous broadband pulse with a large bandwidth (10.2 nm) and high energy (35 J) in the high gain (more than 107 times) laser system was safely created. The coherence time of the output pulse is 318 fs with a 3 ns pulse duration. The excellent near-field beam quality and focusability of the pulse can be comparable to that of conventional coherent lasers. To the best of our knowledge, this is the highest energy of a low-temporal-coherence instantaneous broad-bandwidth pulse reported thus far.