Infrared attosecond field transients and UV to IR few-femtosecond pulses generated by high-energy soliton self-compression

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10 Citations (Scopus)

Abstract

Infrared femtosecond laser pulses are important tools both in strong-field physics, driving x-ray high-harmonic generation, and as the basis for widely tunable, if inefficient, ultrafast sources in the visible and ultraviolet. Although anomalous material dispersion simplifies compression to few-cycle pulses, attosecond pulses in the infrared have remained out of reach. We demonstrate soliton self-compression of 1800-nm laser pulses in hollow capillary fibers to subcycle envelope duration (2 fs) with 27-GW peak power, corresponding to attosecond field transients. In the same system, we generate wavelength-tunable few-femtosecond pulses from the ultraviolet (300 nm) to the infrared (740 nm) with energy up to 25μJ and efficiency up to 12%, and experimentally characterize the generation dynamics in the time-frequency domain. A compact second stage generates multi-microjoule pulses from 210 to 700 nm using less than 200μJ of input energy. Our results significantly expand the toolkit available to ultrafast science.

Original languageEnglish
Article number043037
JournalPhysical Review Research
Volume2
Issue number4
Early online date7 Oct 2020
DOIs
Publication statusPublished - Dec 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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