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arXiv · 2212.11908

Generation and characterization of frequency tuneable sub-15 fs pulses in a gas-filled hollow-core fiber pumped by a Yb:KGW laser

Mohammed Sabbah·Federico Belli·Christian Brahms·Fei Yu·Jonathan Knight·John C. Travers
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Abstract

We investigate soliton self-compression and photoionization effects in an argon-filled antiresonant hollow-core photonic crystal fiber pumped with a commercial Yb:KGW laser. Before the onset of photoionization, we demonstrate self-compression of our 220~fs pump laser to 13~fs in a single and compact stage. By using the plasma driven soliton self-frequency blueshift, we also demonstrate a tuneable source from 1030 to ~700 nm. We fully characterize the compressed pulses using sum-frequency generation time-domain ptychography, experimentally revealing the full time-frequency plasma-soliton dynamics in hollow-core fibre for the first time.

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Mohammed Sabbah, Federico Belli, Christian Brahms, Fei Yu, Jonathan Knight, John C. Travers. 2022-12-22. Generation and characterization of frequency tuneable sub-15 fs pulses in a gas-filled hollow-core fiber pumped by a Yb:KGW laser. https://doi.org/10.1364/ol.484040

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