Timing and energy stability of resonant dispersive wave emission in gas-filled hollow-core waveguides

We numerically investigate the energy and arrival-time noise of ultrashort laser pulses produced via resonant dispersive wave emission in gas-filled hollow-core waveguides under influence pump-laser instability. find that for low pump energy, fluctuations are strongly amplified. However, when generation process is saturated, can be significantly less noisy than pulse. This holds a variety conditions while still producing few-femtosecond pulses. further jitter generated pulse remains well below one femtosecond even conservative estimate noise, photoionisation plasma dynamics lead to exceptional stability some conditions. By applying our analysis scaled-down system, we demonstrate results hold frequency conversion schemes based on both small-core microstructured fibre large-core hollow capillary fibre.