1.
Opt Express
; 30(14): 25410-25417, 2022 Jul 04.
Artículo
en Inglés
| MEDLINE
| ID: mdl-36237072
RESUMEN
We propose the concept and experimentally verify the operation of terahertz quantum cascade laser sources based on intra-cavity Cherenkov difference-frequency generation on a silicon substrate with the current injection layer configured as a metal wire grid. Such a current injector configuration enables high transmission of TM-polarized terahertz radiation into the silicon substrate while simultaneously providing a low-resistivity metal contact for current injection.