| CPC G01N 21/3586 (2013.01) [G01R 31/2831 (2013.01); H01Q 1/12 (2013.01); H01Q 15/145 (2013.01)] | 22 Claims |
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1. A terahertz device, comprising:
terahertz elements including a first terahertz element and a second terahertz element configured to receive an electromagnetic wave; and
reflective surfaces including a first reflective surface and a second reflective surface, the first reflective surface being opposed to the first terahertz element in a thickness-wise direction of the first terahertz element to reflect an incident electromagnetic wave toward the first terahertz element, and the second reflective surface being opposed to the second terahertz element in a thickness-wise direction of the second terahertz element to reflect an incident electromagnetic wave toward the second terahertz element, wherein
the first reflective surface is opened toward the first terahertz element and is curved to be recessed in a direction away from the first terahertz element,
the second reflective surface is opened toward the second terahertz element and is curved to be recessed in a direction away from the second terahertz element,
when a direction parallel to the thickness-wise direction of each of the terahertz elements is referred to as a height-wise direction of the terahertz device, the first reflective surface and the second reflective surface are arranged adjacent to each other in a first direction that intersects the height-wise direction of the terahertz device, and
as viewed in the height-wise direction of the terahertz device, at least one of the first reflective surface and the second reflective surface is smaller in the first direction than in a second direction that differs from the first direction.
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