Fig. 1. Setup of post-compression in high peak power lasers with a standard compressor (G₁, G₂, G₃ and G₄, L₁ = L₂) and an AFGC (, G₂, G₃ and , L₁ ≠ L₂).

Fig. 2. (a) The noise gain for different spatial frequency components. (b) The relationship between the achievable recompression pulse duration and the length of the fused silica TTPs.

Fig. 3. The spatial beam fluences of a 30 fs laser: (a) output from a standard compressor and (b) then after spectral broadening; (c), (d) zoomed-in of the corresponding areas in (a) and (b), respectively.

Fig. 4. (a) The spatial dispersion and (b) the PTA of beam fluence output from the AFGC, based on different L₂ − L₁ of the AFGC. (c) The noise gain curves of laser beams after the AFGC with different L₂ − L₁.

Fig. 5. The spatial beam fluence of a 30 fs laser: (a) output from an AFGC and (b) then after the spectral broadening stage; (c), (d) zoomed-in of the corresponding areas in (a) and (b), respectively.

Fig. 6. (a) The spectra of laser pulses before and after spectral broadening. (b) The pulse durations before and after post-compression with an AFGC.

Fig. 7. (a) The PTA of the beam fluence after spectral broadening with a 1-mm-thick TTP and (b) the corresponding noise gain, based on different initial laser beams. The beam fluences of lasers after spectral broadening with a 1-mm-thick TTP, with (c) a standard compressor and (d) an AFGC. (e), (f) Zoomed-in of the corresponding areas in (c) and (d), respectively.