Photon-counting distribution for arrays of single-photon detectors

Single Photon Counting Detectors for TCSPC

Optimal fine ϕ-slicing for single-photon-counting pixel detectors

The data-collection parameters used in a macromolecular diffraction experiment have a strong impact on data quality. A careful choice of parameters leads to better data and can make the difference between success and failure in phasing attempts, and will also result in a more accurate atomic model. The selection of parameters has to account for the application of the data in various phasing met...

Photon-Counting Superconducting Detectors for Submillimeter Astronomy

We are developing superconducting direct detectors (Single Quasiparticle Photon Counter, or SQPC) for submillimeter astronomy that could detect individual photons. These devices measure the quasiparticles generated breaking Cooper-pairs by photon absorption. This photoconductive type of device could yield high quantum efficiency, few s response times, and sensitivities in the range of 10 -20 W/...

Photon-HDF5: an open file format for single-molecule fluorescence experiments using photon-counting detectors

We introduce Photon-HDF5, an open and efficient file format to simplify exchange and long term accessibility of data from single-molecule fluorescence experiments based on photon-counting detectors such as single-photon avalanche diode (SPAD), photomultiplier tube (PMT) or arrays of such detectors. The format is based on HDF5, a widely used platformand language-independent hierarchical file for...

Photon counting arrays for AO wavefront sensors

Future wavefront sensors for AO on large telescopes will require a large number of pixels and must operate at high frame rates. Unfortunately for CCDs, there is a readout noise penalty for operating faster, and this noise can add up rather quickly when considering the number of pixels required for the extended shape of a sodium laser guide star observed with a large telescope. Imaging photon co...