High Repetition-Rate Pulse Shaping of a Spectrally Broadened Yb Femtosecond Laser

TL;DR

This paper demonstrates a method to compress and shape high-power Ytterbium laser pulses into few-cycle durations using spectral broadening and an integrated pulse-shaper, enabling precise control of ultrafast laser pulses.

Contribution

It introduces an integrated approach combining spectral broadening and acousto-optic pulse shaping for high-repetition-rate ultrafast laser pulses.

Findings

Achieved ~10 fs pulse duration from a 20 W, 100 kHz Yb laser

Successfully spectrally broadened pulses using gas-filled hollow-core fibers

Demonstrated pulse shaping and compression in a single system

Abstract

We demonstrate compression and shaping of few cycle pulses from a high average power Ytterbium laser system. The pulses from a commercial 20 W, 100 kHz Yb laser system are spectrally broadened in two-stages using gas-filled, stretched hollow-core fibers and then compressed and shaped in an acousto-optic modulator-based pulse-shaper. The pulse-shaper allows for compression, characterization, and shaping all in one system, producing ~10 fs pulses with 50 uJ of energy