Fig. 3. (IMAGE)
Caption
Fig. 3. The attosecond backscattered pulse generated by an in-phase 2-color drive beam with an energy mixture ratio of P= 0.4. The delay–amplitude maps for a 4-fs Gaussian
source beam at a given amplitude a0. (A) and (B) present scaling for Thomson backscattered pulse peak amplitude ratios 휂 = aTBS 0
∕ a0 and temporal compression 휉 = 휏 ∕ 휏TBS
compared to the counterpropagating source pulse with an amplitude a0 and duration = 4 fs. The temporal durations of each Thomson backscattered field overlaid with its
central frequency for the case of source pulses a0 = 0.2 (C) and a0 = 2 (D) are depicted. The TBS spectra consist of a peak (central) frequency with an FWHM bandwidth,
indicated by a vertical bar. In each case, the FWHM is calculated by fitting a Gaussian function on the squared field and spectrum. (E) Distribution of Gaussian random phase
noise (FWHM[Δϕ] = 100 mrad) and P fluctuations (FWHM[P] = 5%) around the nominal point ( P−Δ휙 ) = ( 0.4, 0) used for mimicking 104 light waveforms under a typical
experimental scenario. Panel (F) depicts the corresponding distribution of the isolated AP properties in ( 휏TBS −휂 ) space.
Credit
Ultrafast Science
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