Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 39, Issue 3, Pages A1-A8Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.445028
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- Science and Engineering Research Council [1426500049, A1890b0049]
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This paper systematically investigates the effects of higher-order dispersion on the self-compression process of pulses and discovers a stable and reliable rule to maintain the pulse duration close to the limit.
Self-compression of an ultrashort pulse in a hollow-core waveguide filled with noble gas is a simple and promising approach to generate few and even single-cycle pulses. However, when the input pulse energy approaches to mJ level, ionization of the gas induces strong higher-order dispersion through multiple mechanisms, which makes the temporal compression process unstable and even fail. In this paper, we systematically study the effects of higher-order dispersion in the self-compression process of in] few-cycle pulses. We found that the self-compression depends on the approaching routine of group delay dispersion and third-order dispersion optimization. There exists a steady and stable routine to maintain the pulse duration around the Fourier transform limit. Then, we successfully demonstrate stable and repeatable compression of 3 mJ pulses to 13.1 and 10.5 fs in a 2 cm hollow-core waveguide filled with Ar and Kr, respectively. (C) 2021 Optics Publishing Group
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