On the Application of a Monolithic Array for Detecting Intensity-Correlated Photons Emitted by Different Source Types
| Autor: | Boiko, D. L., Gunther, N. J., Brauer, N., Sergio, M., Niclass, C., Beretta, G. B., Charbon, E. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Optics Express 17 (2009) 15087--15103 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.17.015087 |
| Popis: | It is not widely appreciated that many subtleties are involved in the accurate measurement of intensity-correlated photons; even for the original experiments of Hanbury Brown and Twiss (HBT). Using a monolithic 4x4 array of single-photon avalanche diodes (SPADs), together with an off-chip algorithm for processing streaming data, we investigate the difficulties of measuring second-order photon correlations g2 in a wide variety of light fields that exhibit dramatically different correlation statistics: a multimode He-Ne laser, an incoherent intensity-modulated lamp-light source and a thermal light source. Our off-chip algorithm treats multiple photon-arrivals at pixel-array pairs, in any observation interval, with photon fluxes limited by detector saturation, in such a way that a correctly normalized g2 function is guaranteed. The impact of detector background correlations between SPAD pixels and afterpulsing effects on second-order coherence measurements is discussed. These results demonstrate that our monolithic SPAD array enables access to effects that are otherwise impossible to measure with stand-alone detectors. Comment: 17 pages, 6 figures |
| Databáze: | arXiv |
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