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

doi:10.1364/OE.496506

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

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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 language	English
Pages (from-to)	30227-30238
Number of pages	12
Journal	Optics Express
Volume	31
Issue number	19
Early online date	29 Aug 2023
DOIs	https://doi.org/10.1364/OE.496506
Publication status	Published - 11 Sept 2023

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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.",

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AU - Lekosiotis, Athanasios

AU - Belli, Federico

AU - Brahms, Christian

AU - Sabbah, Mohammed

AU - Sakr, Hesham

AU - Davidson, Ian A.

AU - Poletti, Francesco

AU - Travers, John C.

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AB - 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.

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

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