High-order nonlinear terahertz probing of the two-band superconductor MgB${}_2$: Third- and fifth-order harmonic generation

C. Reinhoffer, P. Pilch, A. Reinold +16

We report on high-order harmonic generation in the two-band superconductor MgB${}_2$ driven by intense terahertz electromagnetic pulses. Third- and fifth-order harmonics are resolved…