• 专利标题:   Infrared bolometer e.g. graphene-based infrared bolometer, for detecting infrared light, has graphene sheet coupled to evanescent field, and circuit connected to two contacts of graphene sheet, where circuit measures thermal noise level.
  • 专利号:   US2016370232-A1, WO2016204862-A2, WO2016204862-A3, AU2016278766-A1, US9933310-B2, CN107923790-A, EP3311128-A2
  • 发明人:   FONG K C
  • 专利权人:   RAYTHEON BBN TECHNOLOGIES CORP, RAYTHEON BBN TECHNOLOGIES CORP, RAYTHEON BBN TECHNOLOGIES CORP
  • 国际专利分类:   G01J005/08, G01J005/20, G01J001/42, G01J001/44, H01L029/16, G01J005/10
  • 专利详细信息:   US2016370232-A1 22 Dec 2016 G01J-005/08 201703 Pages: 18 English
  • 申请详细信息:   US2016370232-A1 US794591 08 Jul 2015
  • 优先权号:   US181177P, US794591

▎ 摘  要

NOVELTY - The bolometer has a waveguide (110) for guiding infrared electromagnetic waves in a mode including evanescent field extending outside of the waveguide. A graphene sheet (120) comprises two contacts (330), and is coupled to the field. The sheet includes temperature corresponding to amount of electromagnetic power absorbed by the sheet when the electromagnetic power in the field is absorbed by the sheet. The sheet generates thermal noise at the two contacts at level corresponding to the temperature. A circuit is connected to the two contacts, and measures the thermal noise level. USE - Infrared bolometer e.g. graphene-based infrared bolometer and high-sensitivity high-bandwidth bolometer, for detecting infrared light in infrared imaging system (claimed), in communications systems. ADVANTAGE - The bolometer utilizes a reflector at a front end of the waveguide that is partially reflective to allow the infrared light to enter a resonator, and the reflector at a back end of the waveguide that is highly reflective to avoid allowing the light to escape from the back end of the waveguide. The bolometer provides high-sensitivity and high-bandwidth. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a bolometer sensor assembly. Waveguide (110) Graphene sheet (120) Bolometer sensor assembly (124) Silicon substrate (310) Contact of graphene sheet (330)