Post-compression of long-wave infrared 2&nbsp;picosecond sub-terawatt pulses in bulk materials

Polyanskiy, Mikhail N.; Pogorelsky, Igor V.; Babzien, Marcus; Kupfer, Rotem; Vodopyanov, Konstantin L.; Palmer, Mark A.

doi:10.1364/OE.434238

Post-compression of long-wave infrared 2 picosecond sub-terawatt pulses in bulk materials

Journal Article · Mon Sep 20 00:00:00 EDT 2021 · Optics Express

DOI:https://doi.org/10.1364/OE.434238· OSTI ID:1821762

; Pogorelsky, Igor V.; Babzien, Marcus; ; Vodopyanov, Konstantin L.;

We have experimentally demonstrated the post-compression of a long-wave infrared (9.2 μm) 150 GW peak power pulse from 2 ps to less than 500 fs using a sequence of two bulk materials with negative group velocity dispersion (GVD). The compression resulted in up to 1.6-fold increase of the peak power and up to 2.8-fold increase of the intensity in the center of a quasi-Gaussian beam. The partial decoupling of the self-phase modulation and chirp compensation stages by using two materials with significantly different ratios of nonlinear refractive index to GVD provides accurate optimization of the compression mechanism and promises a viable path to scaling peak powers to supra-terawatt levels. During the preparatory study, we measured, for the first time to our knowledge, the nonlinear refractive indices of NaCl, KCl, and BaF ₂ for picosecond pulses in the long-wave infrared region.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC)

Grant/Contract Number:: SC0012704

OSTI ID:: 1821762

Alternate ID(s):: OSTI ID: 1827704

Report Number(s):: BNL--222321-2021-JAAM

Journal Information:: Optics Express, Journal Name: Optics Express Journal Issue: 20 Vol. 29; ISSN 1094-4087; ISSN OPEXFF

Publisher:: Optical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

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