Highly efficient deep UV generation by four-wave mixing in gas-filled hollow-core photonic crystal fiber.
Opt Lett
; 44(22): 5509-5512, 2019 Nov 15.
Article
en En
| MEDLINE
| ID: mdl-31730095
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 â¼100 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).
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2019
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Article