Fig. 25

Energy spectra for backward beam (a, c) recorded for z = 1.5 mm and forward beam (b, d) recorded on the target plane. Results for 1ω (a, b) and 3ω (c, d).

Energy spectra for backward beam (a, c) recorded for z = 1.5 mm and forward beam (b, d) recorded on the target plane. Results for 1ω (a, b) and 3ω (c, d).