Mm/sub-mm bolometer with free carriers heating in bipolar semiconductor waveguide

Submillimeter technologies now received increasing interest for scientific and commercial applications (e.g., imaging, security, biological, drugs and explosion detection, gases fingerprints, etc.) (see, e.g., [1–3]) and these technologies frequently need relatively simple room temperature or not deeply cooled (T≥80 K) broadband direct detection detectors [4].