ABOUT TERAHERTZ GENERATION ON THE SUPERSTRUCTURES LAYERS A~(III)B~(III)C_2~(VI) CRYSTALS

摘要

In layered crystals of the A~(III)B~(III)C_2~(VI) family the presence of wide temperature ranges is indicated, in which on the primitive translation of the lattice of the initial phase superlattices with periods of 5-15 nm are superimposed. At that, the neutron-diffraction patterns show the presence of superstructural reflections: both reflections that are multiple of the initial translation of the lattice and incommensurable superstructural ones. Our research showed that layered crystals of the TlInS_2 family are crystallized with the formation of both incommensurable and commensurate (of the initial translation) superlattices and could be used for the generation of Terahertz radiation.