Bolometer type Terahertz wave detector

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.