Optimum "Resistive" Absorbers: large detectors

• area >> _2

• "multimode" system

• impedance matched sheet

  • absorption must be VERY strong
  • requires both resistive sheet and perfect mirror

• 100 % absorption in resistive sheet at design wavelength

mirror

_/4

resistive sheet

RS = 377 ž/square

incident

radiation

reflectance = 0

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