Low Noise Avalanche Photodiodes
Low Noise Avalanche Photodiodes
Low Noise Avalanche Photodiodes
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Ionization - Threshold energyFor ionization:1) energy and momentum conservation2) minimisation of energyImpact ionization schematicdiagramvalence electronholefinal electronEghot electronE thm em hhm s-om lhE g = Band gapE th = Threshold energy‘minimum energy forionization’For parabolic bandsand equal masses,E th = 1.5 E g<strong>Low</strong> <strong>Noise</strong> <strong>Avalanche</strong> <strong>Photodiodes</strong>