| abstract |
The invention particularly relates to a method and apparatus for generating electromagnetic radiation in the terahertz and millimeter range using a non-linear medium, which within the laser resonator of a suitable laser, such as. B. a VECSEL or a disk laser, which operates in two- or multi-color operation, said radiation generated by difference frequency generation. The invention also relates to novel outcoupling structures used for optimized decoupling and separation of the generated radiation from the optical radiation generated in the laser resonator as well as suitable novel nonlinear media as such. |