Resonant cavity-enhanced quantum-dot infrared photodetectors with guided-mode resonance reflector

We propose a resonant cavity-enhanced quantum-dot infrared photodetectors with a top mirror of Ge/SiO
₂
sub-wavelength grating. With a total thickness of ~7.7 μm, the simulated maximum absorption is ~60-70% at 8 μm with an enhancement factor of ~6-20.