Highly efficient deep UV generation by four-wave mixing in gas-filled hollow-core photonic crystal fiber

Federico Belli, Amir Abdolvand, John C. Travers, Philip St. J. Russell

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report on a highly efficient experimental scheme for the generation of deep-ultraviolet (UV) ultrashort light pulses using four-wave mixing in gas-filled kagomé-style photonic crystal fiber. By pumping with ultrashort, few microjoule pulses centered at 400 nm, we generate an idler pulse at 266 nm and amplify a seeded signal at 800 nm. We achieve remarkably high pump-to-idler energy conversion efficiencies of up to 38%. Although the pump and seed pulse durations are ∼100  fs, the generated UV spectral bandwidths support sub-15 fs pulses. These can be further extended to support few-cycle pulses. Four-wave mixing in gas-filled hollow-core fibers can be scaled to high average powers and different spectral regions such as the vacuum UV (100–200 nm).
Original languageEnglish
Pages (from-to)5509-5512
Number of pages4
JournalOptics Letters
Volume44
Issue number22
Early online date16 Oct 2019
DOIs
Publication statusPublished - 15 Nov 2019

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