Figure 5
Beam intensity profiles, normalized to maximum intensity, at the fourth and fifth harmonic energies were obtained while keeping the gap of the IVU at 5.1 mm. Profiles in (a) and (b) were acquired at the minimum energy of the fourth harmonics in planar and tapered modes, respectively; those in (c) and (d) were acquired at the minimum energy of the fifth harmonics in planar and tapered modes, respectively. |