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Generation of TW-scale mid-IR femtosecond pulses using a dual-chirped optical parametric amplification
Author(s): Yuxi Fu; Kotaro Nishimura; Akira Suda; Katsumi Midorikawa; Eiji J. Takahashi
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Paper Abstract

By using a dual-chirped optical parametric amplification (DC-OPA) scheme, we demonstrate high-energy infrared (IR) pulses with TW-scale peak power in the wavelength region of 1 ∼ 3.5 μm. In the central wavelengths between 1.2 ∼ 1.8 μm, we obtained over 100 mJ pulse energy. DC-OPA, which is an energy scalable method for an OPA process, can allow us to use a joule-class Ti:sapphire laser system for pumping an OPA. To the best of our knowledge, our DC-OPA laser is the first 100-mJ-class IR source with pulse duration of shorter than 100 fs. Additionally, to show the ability of our DC-OPA laser system, we demonstrate an energy-scaling strategy of high-order harmonic driven by a loosely focused 1.5 μm pulse. Using a 4-cm Ne gas cell with a 3.5-m laser focusing length, soft x-ray harmonics beyond 200 eV are clearly enhanced by a phase-matching effect.

Paper Details

Date Published: 19 February 2018
PDF: 8 pages
Proc. SPIE 10522, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVIII, 1052210 (19 February 2018); doi: 10.1117/12.2300727
Show Author Affiliations
Yuxi Fu, RIKEN (Japan)
Kotaro Nishimura, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Akira Suda, RIKEN (Japan)
Katsumi Midorikawa, RIKEN (Japan)
Eiji J. Takahashi, RIKEN (Japan)


Published in SPIE Proceedings Vol. 10522:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVIII
Peter R. Herman; Michel Meunier; Roberto Osellame, Editor(s)

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