Absolute measurement of detector quantum efficiency using parametric downconversion.

@article{Rarity1987AbsoluteMO,
  title={Absolute measurement of detector quantum efficiency using parametric downconversion.},
  author={John G. Rarity and K. D. Ridley and P. R. Tapster},
  journal={Applied optics},
  year={1987},
  volume={26 21},
  pages={4616-9}
}
We show that a parametric downconversion crystal emitting angle resolved coincident photon pairs can be used to measure the absolute quantum efficiency of a photon counting detection system. We have measured the quantum efficiency of a silicon avalanche photodiode, operated in Geiger mode, as a function of operating voltage and compare this to results… CONTINUE READING