Patent ID: 8618483

Claim:
A bolometer type Terahertz wave detector comprising: a temperature detecting portion having a thin bolometer film that is formed on a substrate; a support portion that supports the temperature detecting portion in a state separated from the substrate by a gap; a reflective film that reflects incident Terahertz waves and that is formed on the substrate such that the reflective film faces the temperature detecting portion; an eave-like member that extends to the inside and the outside from the perimeter edge section of the temperature detecting portion; and an absorption film that absorbs incident Terahertz waves wherein: an optical resonant structure is configured by the reflective film, the absorption film on the eave-like member that extends to the outside from the perimeter edge section of the temperature detecting portion, and a dome-like portion formed of the absorption film on the eave-like member extends to the inside from the perimeter edge section of the temperature detecting portion, thereby enabling an effective detection of the incident Terahertz waves.