A space-and time-resolved single photon counting detector for fluorescence microscopy and spectroscopy

X Michalet, OH Siegmund, JV Vallerga, P Jelinsky, JE Millaud, S. Weiss

Research output: Contribution to journalArticlepeer-review

Abstract

We have recently developed a wide-field photon-counting detector having high-temporal and high-spatial resolutions and capable of high-throughput (the H33D detector). Its design is based on a 25 mm diameter multi-alkali photocathode producing one photo electron per detected photon, which are then multiplied up to 107 times by a 3-microchannel plate stack. The resulting electron cloud is proximity focused on a cross delay line anode, which allows determining the incident photon position with high accuracy. The imaging and fluorescence lifetime measurement performances of the H33D detector installed on a standard epifluorescence microscope will be presented. We compare them to those of standard single-molecule detectors such as single-photon avalanche photodiode (SPAD) or electron-multiplying camera using model samples (fluorescent beads, quantum dots and live cells). Finally, we discuss the design and applications of future generation of H33D detectors for single-molecule imaging and high-throughput study of biomolecular interactions.
Original languageAmerican English
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2006

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