Numerical Simulations of Transfer of Spatial Beam Aberrations in Optical Parametric Chirped-Pulse Amplification

Figure 1

Angular spectrum of output signal beam (a) and idler beam (b) when pump phase is modulated. Dotted line: spatial walk-off effect not considered, a = 0.5. Dashed (solid) line: spatial walk-off effect considered, a = 0.2 (0.5). E₀ = 10⁻⁶ (small-signal condition); crystal length L is 10 mm; L_NL = 0.23L; L_sp = 5L; n = 4.

(a)

(b)