Figure 16
THz field spectra recorded on the AILES beamline with (black) laser-ON and (red) laser-OFF (× 100) for (a) PLaser = 0.3 W and (b) PLaser = 2.6 W. For laser-ON lines, the gap is (dotted line) 16.7 mm, (thick full line) 16.9 mm, (thin full line) 17.2 mm and (dashed line) 17.5 mm. = 35 fs FWHM, f# = 1.3, I = 5 mA in single-bunch mode. |