Abstract
To verify the possibility of harmonic generations from a SiC irradiated by MIR-FEL, two measurements observing the second harmonic generation (SHG) and the high harmonic generation (HHG) were conducted. As the result, we clearly observed the SHG whose intensity was proportional to the square of MIR-FEL intensity. Emissions corresponding to the wavelength of the high harmonics (9th, 10th, and 11th) of the irradiated MIR-FEL (7.8 mu m and 8.4 mu m) were observed. (C) 2013 The Authors. Published by Elsevier B.V.