Generation of 3-mJ, 4-fs CEP-Stable Pulses by Long Stretched Flexible Hollow Fibers

Abstract

3-mJ, 4-fs CEP-stable pulses were generated by spectral broadening of circularly polarized 8mJ pulses in a differentially pumped 2-m-long hollow fiber. The pulses were characterized by SHG d-scan method.

Generation and Parametric Amplification of Few‐Cycle Light Pulses at Relativistic Intensities

“…Similarly, supercontinua can be generated by self-focusing and filamentation in bulk material, however, the eventual break up of the filament at high input power limits the available output energy for this method typically to the order of nanojoule to microjoule [125]. HCF broadening on the other hand has been demonstrated with pulse energies of up to several millijoule [126,127]. The setup of the initial seed generation scheme is shown in Fig.…”

“…This applies also for the ambitious OPAL and XCEL projects that seek to bring OPCPA at moderate bandwidth to the kilojoule-level. , LWS-pro [107], Ecole Polytechnique [126], LWS20 [44], ELI-ALPS Sylos [165], CELIA [34], ELI-ALPS HF [167], Apollon 10 PW [40], OPAL [168], ATLAS [169], ELI-NP HPLS [39], SIOM-SULF [12,38], XCEL [170], Astra-Gemeni [171], BELLA [32], Vulcan [43,172], POLARIS [173], PENELOPE [174], Texas PW [31]. It should be noted that the plot does not provide any information about the repetition rate.…”

Generation of multi-octave spanning high-energy pulses by cascaded nonlinear processes in BBO

“…Under these practically feasible conditions the achievable pulse duration of ∼ 2.6 fs (sub-cycle) is lengthened by not more than 10%. The spectral phase of these pulses is -dominated by dispersion -smooth and can be well approximated with a polynomial function (dispersion coefficients: GDD=28 fs 2 , TOD=37 fs 3 , FOD=−71 fs 4 , λ central =1000 nm). Hence good compression with standard tools is expected.…”

“…Ti:Sapphire systems -are used in combination with nonlinear broadening techniques like hollow core fiber (HCF) compression to overcome this limitation [3]. Such schemes have been in use for several years and are able to generate pulses with durations of less than 4 fs and energies up to 3.4 mJ [4].…”