G. M. Savchenko, V. V. Dudelev, E. A. Kognovitskaya, S. N. Losev, A. G. Deryagin, V. I. Kuchinskii, N. S. Averkiev, G. S. Sokolovskii
https://link.springer.com/article/10.1134%2FS0030400X1810020X
The possibility of efficient difference-frequency generation of terahertz radiation in a metamaterial representing a structure consisting of alternating layers of a semiconductor materials exhibiting intrinsic or metallic conductivity that can be grown by epitaxial methods is investigated theoretically.
