Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 44: Photonics II

Q 44.5: Talk

Thursday, March 9, 2017, 12:00–12:15, P 11

Photon-statistics-based ghost imaging with one single detector — •Lydia Fischer, Simone Kuhn, Sébastien Blumenstein, and Wolfgang Elsäßer — Institute of Applied Physics, TU Darmstadt, Germany

Ghost Imaging is an imaging technique in which intensity correlations of light are exploited. A light beam is directed onto an object and the entirely transmitted or reflected light is collected by a single pixel detector. By the correlation of this beam with a second, spatially resolved, highly correlated reference beam which does not interact with the object, an image can be formed.
Here we demonstrate a novel ghost imaging scheme. Instead of the two detector concept, the light from the object and reference beam is superimposed and then detected by one single photon counting detector. The combination of a fast single photon avalanche diode (SPAD) and a time tagged time resolved (TTTR) photon counting module allows acquiring photon count time traces. The statistical evaluation of these time traces yields the combined photon number probability distribution. Thereby one can compute all moments of the photon distribution and thus the correlation coefficients. In combination with the spatial information of the reference arm a ghost image can be formed. By presenting a proof-of-principle ghost imaging experiments in one and two dimensions, the feasibility of the photon statistics based GI experiment is demonstrated.
S.Kuhn, S.Hartmann, and W. Elsäßer, Opt.Lett.41, 2863-2866 (2016)