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How fast does a photo-conductor reach full conductivity when exposed to the appropriate wavelength of light? How fast does it cease to conduct when the radiation ceases? It might vary, so I could also use the general order of magnitude or range, also if photoconductors vary too wildly in this regard, could you describe a photoconductor that reaches full capacity and back again in less than a 30th of a picosecond? I'm working on a device that needs to detect pulses of light in the gigahertz range

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  • $\begingroup$ Gigahertz is pretty easy with pin diodes. $\endgroup$ – Jon Custer Nov 24 '17 at 2:25
  • $\begingroup$ I think your limiting factor here might be the capacitance and inductance around the photoconductor rather than its internal response time. $\endgroup$ – bigjosh Nov 24 '17 at 4:29

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