Fattinger-Grischkowsky 1989 photoconductive THz-time-domain-spectroscopy; modern coherent-THz + asynchronous-optical-sampling at 100s of MHz.
Fattinger-Grischkowsky 1989 photoconductive THz-time-domain-spectroscopy; modern coherent-THz + asynchronous-optical-sampling at 100s of MHz.