- 专利标题: Slot antennas for graphene mid-IR imaging arrays as well an approach for CMOS implementation thereof
-
申请号: US16684917申请日: 2019-11-15
-
公开(公告)号: US11688756B2公开(公告)日: 2023-06-27
- 发明人: Jordan Goldstein , Dirk Robert Englund
- 申请人: Massachusetts Institute of Technology
- 申请人地址: US MA Cambridge
- 专利权人: Massachusetts Institute of Technology
- 当前专利权人: Massachusetts Institute of Technology
- 当前专利权人地址: US MA Cambridge
- 代理机构: Smith Baluch LLP
- 主分类号: H01L27/14
- IPC分类号: H01L27/14 ; H01L27/146 ; H01L29/16 ; H01Q21/06 ; H04N5/33 ; H01G9/20 ; H10N19/00
摘要:
A filter-based color imaging array that resolves N different colors detects only 1/Nth of the incoming light. In the thermal infrared wavelength range, filtering loss is exacerbated by the lower sensor detectivity at infrared wavelengths than at visible wavelengths. To avoid loss due to filtering, most spectral imagers use bulky optics, such as diffraction gratings or Fourier transform interferometers, to resolve different colors. Fortunately, it is possible to avoid filtering loss without bulky optics: detect light with interleaved arrays of sub-wavelength-spaced antennas tuned to different wavelengths. An optically sensitive element inside each antenna absorbs light at the antenna's resonant wavelength. Metallic slot antennas offer high efficiency, intrinsic unidirectionality, and lower cross-talk than dipole or bowtie antennas. Graphene serves at the optically active material inside each antenna because its 2D nature makes it easily adaptable to this imager architecture.
公开/授权文献
信息查询
IPC分类: