Domain-Reversed Lithium Niobate Single-Crystal Fibers are Potentially for Efficient Terahertz Wave Generation
Figure 3
The generated THz frequency versus the domain
period in crystal for both forward and backward propagation
schemes. , are wave vectors for the pump , the signal , the generated THz wave, and the reciprocal vector
of the grating, respectively. Inset
shows the relationship between the generated THz frequency and the internal
emission angle (this angle is to be used for further coupling the THz wave out
from the main core).
