Efficient (~10%) generation of vacuum ultraviolet femtosecond pulses via four-wave mixing in hollow-core fibers

Journal Article · 28 May 2024 · Optics Letters

DOI: https://doi.org/10.1364/ol.524719 · OSTI ID:2367281

Forbes, Ruaridh  ^[1]; Hockett, Paul  ^[2]; Leterrier, Quentin ^[3]; Lausten, Rune  ^[2]

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1. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); SLAC
2. National Research Council of Canada, Ottawa, ON (Canada)
3. École Normale Supérieure de Lyon (France)

Here we report the generation of the fifth harmonic of Ti:sapphire, at 160 nm, with more than 4 µJ of pulse energy and a pulse length of 37 fs with a 1 kHz repetition rate. The vacuum ultraviolet pulses are produced using four-wave difference frequency mixing in a He-filled stretched hollow-core fiber, driven by a pump at 267 nm and seeded at 800 nm. Guided by simulations using Luna.jl, we are able to optimize the process carefully. The result is a conversion efficiency of ~10% from the 267 nm pump beam.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 2367281
• Alternate ID(s): OSTI ID: 2427073
• Journal Information: Optics Letters, Journal Name: Optics Letters Journal Issue: 11 Vol. 49; ISSN 0146-9592
• Publisher: Optical Society of America (OSA)Copyright Statement
• Country of Publication: United States
• Language: English