Detector for multichannel spectroscopy and fluorescence lifetime imaging on the picosecond timescale

Details Detector for multichannel spectroscopy and fluorescence lifetime imaging on the picosecond timescale Detector for multichannel spectroscopy and fluorescence lifetime imaging on the picosecond timescale

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997nimpa.387...86k&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 387, Issue 1-2, p. 86-87.

Physics

3

Scientific paper

Simultaneous acquisition of time- and space-information on the picosecond timescale became feasible by a recent advance in microchannel-plate photomultiplier-tube (MCP-PMT) technology: we present two novel MCP-PMT detectors for time- and space-correlated single photon counting (TSCSPC), featuring a space-sensitive delay-line (DL) anode and quadrant-anode (QA), respectively. The linear DL-MCP-PMT is characterised by a spatial instrument response function (IRF) of 100 μm FWHM, resulting in 200 space channels, whereas the QA-MCP-PMT is a 2D imager with 400 × 400 pixel of 40 μm space resolution. The detectors have a temporal IRF of 75 ps (DL) and 80 ps (QA) FWHM, sufficient for 10 ps time resolution, at a dynamic range of 105 of the uncooled detector. By employing a 2D multichannel analyser based on transputer technology, 100 000 cps through-put or higher is possible. In imaging mode without timing, the QA-detector can achieve 106 cps. A gain of 5 × 106 is achieved at only minus 2400 V. Applications for the novel imaging detectors will be found in microscopic structural biology, astronomy, and nuclear research.

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