On-target delivery of intense ultrafast laser pulses through hollow-core anti-resonant fibers

Athanasios Lekosiotis, Federico Belli, Christian Brahms, Mohammed Sabbah, Hesham Sakr, Ian A. Davidson, Francesco Poletti, John C. Travers

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
5 Downloads (Pure)

Abstract

We report the flexible on-target delivery of 800 nm wavelength, 5 GW peak power, 40 fs duration laser pulses through an evacuated and tightly coiled 10 m long hollow-core nested anti-resonant fiber by positively chirping the input pulses to compensate for the anomalous dispersion of the fiber. Near-transform-limited output pulses with high beam quality and a guided peak intensity of 3 PW/cm² were achieved by suppressing plasma effects in the residual gas by pre-pumping the fiber with laser pulses after evacuation. This appears to cause a long-term removal of molecules from the fiber core. Identifying the fluence at the fiber core-wall interface as the damage origin, we scaled the coupled energy to 2.1 mJ using a short piece of larger-core fiber to obtain 20 GW at the fiber output. This scheme can pave the way towards the integration of anti-resonant fibers in mJ-level nonlinear optical experiments and laser-source development.
Original languageEnglish
Pages (from-to)30227-30238
Number of pages12
JournalOptics Express
Volume31
Issue number19
Early online date29 Aug 2023
DOIs
Publication statusPublished - 11 Sept 2023

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