Angular resolution simulation 1.22 B Effects of separation, diameter and wavelength on Resolving P ower Chart: 11 February 13, 2001 16.684 Space Systems Product Development MIT Space Systems Laboratory
Angular Resolution Simulation 1.22 O T B Effects of separation, diameter and wavelength on Resolving Power Chart: 11 16.684 Space Systems Product Development MIT Space Systems Laboratory February 13, 2001
absorption Electronic Detectors work by absorption, 1. e a photon is absorbed by a semiconductor surface and turned into a photo electron -> photoelectric effect 400A<<10.000Ae-=1 photon E=hy 1A<<1000A.e=eV/3.65eV/er of photoelectrons 30-50Qcm: EpI Epitaxial layer generated 20 um Substrate Absorption in an opaque non-Silicon 500gm 0.019cm opaque material photons-> heat E. g. Germanium is opaque in visible but transmissive in the band from 1. 8-25 um Opaque surfaces absorb Chart: 12 February 13, 2001 16.684 Space Systems Product Development MIT Space Systems Laboratory
Absorption Electronic Detectors work by absorption, i.e. a photon is absorbed by a semiconductor surface and turned into a photoelectron -> photoelectric effect. photon 4000Å<O<10,000Å ,e- =1 e- 20 Pm 500 Pm 30-50:cm 0.01:cm Substrate Epitaxial layer E=hQ 1Å<O<1000Å, e- = eV/3.65eV/e- # of photoelectrons generated. Absorption in an opaque non-silicon opaque material + hole photons -> heat E.g. Germanium is opaque in visible but transmissive in the band from 1.8-25 Pm. Opaque surfaces absorb. Chart: 12 16.684 Space Systems Product Development MIT Space Systems Laboratory February 13, 2001