Journal
Scientific and technical journal of information technologies, mechanics and optics
UDK535.4
Issue:1 (71)
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DIFFRACTION OF ONE-PERIOD TERAHERTZ ELECTROMAGNETIC WAVES WITH GAUSSIAN TRANSVERSAL DISTRIBUTION
Annotation
We obtained new analytic forms for transversal spatial distribution of time spectrum of terahertz waves consisting of only one full cycle of electromagnetic field on the emitter in Fresnel and Fraunhofer diffraction zones and for time-spatial distribution of their field in the Fraunhofer diffraction zone. It is shown that terahertz wave with Gaussian transversal distribution undergoes changes not only in spatial but in time emission structure in the far-field: the wave turns from one-period to one-and-a-half-period near the axe and its spectrum shifts to higher frequencies. The estimates of diffraction zones distances are given.
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