Metal-grating-coupled terahertz quantum-well photodetectors

  1. Get@NRC: Metal-grating-coupled terahertz quantum-well photodetectors (Opens in a new window)
DOIResolve DOI:
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
Journal titleIEEE Electron Device Letters
Article number5737762
Pages659661; # of pages: 3
SubjectBlack body radiation; GaAs/AlGaAs; grating; Incident detection; Light coupling efficiency; Metal grating; Modal method; Optimization conditions; Photocurrent spectrum; Quantum well; quantum well (QW); Terahertz; THz waves; Antenna radiation; Detectors; Optoelectronic devices; Photodetectors; Quantum optics; Semiconductor quantum wells; Terahertz waves; Terahertz wave detectors
AbstractThree terahertz (THz) GaAs/AlGaAs quantum-well photodetectors with different 1-D metal gratings are fabricated for front-incident detection of THz waves. Photocurrent spectra are acquired and compared with 45 ° incident facet samples (without grating), and peak responsivities are determined with a calibrated blackbody radiation source. The results show that these gratings can couple THz waves into detectors effectively, resulting in good detector responsivities. The modal method is employed to simulate the light coupling efficiency and the optimization conditions of the gratings. © 2011 IEEE.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21271436
Export citationExport as RIS
Report a correctionReport a correction
Record identifier7fe05231-abda-405c-9309-bd7183b6022a
Record created2014-03-24
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)