A visible light photon-counting imaging detector based on induction readout

Photon-counting imaging detectors based on microchannel plate (MCP) and position-sensitive anode are characterized by extremely high sensitivity, as well as the ability to detect single photons. In this study, a visible light photon-counting imaging detector based on induction readout was developed for the detection of weak light intensities, such as photon counting radar and biofluorescence lifetime imaging. The design is based on a 25 mm diameter multi-alkali S20 photocathode followed by a MCP stack, and read out by a high-resistance Ge layer anode. The position-sensitive anode was located at the atmosphere side of the Ge substrate. Such a detector was advantageous in terms of reconfigurability and detachability. The imaging performance of the detector was tested by using the wedge and strip anode to decode the photon event position information. The experimental results showed a detector gain reaching about 3×106 , pulse height resolution (PHR) of about 105%, and spatial resolution better than 100μm.

[1]  Alix Le Marois,et al.  Picosecond wide-field time-correlated single photon counting fluorescence microscopy with a delay line anode detector , 2016 .

[2]  Larry J. Paxton,et al.  On-orbit calibration of the Special Sensor Ultraviolet Scanning Imager (SSUSI): a far-UV imaging spectrograph on DMSP F-16 , 2002, SPIE Optics + Photonics.

[3]  Christopher D. Martin,et al.  WEDGE-AND-STRIP ANODES FOR CENTROID-FINDING POSITION-SENSITIVE PHOTON AND PARTICLE DETECTORS. , 1981 .

[4]  Klaus Suhling,et al.  Photon counting phosphorescence lifetime imaging with TimepixCam. , 2017, The Review of scientific instruments.

[5]  V. Mergela,et al.  Position sensitive anodes for MCP read-out using induced charge measurement , 2002 .

[6]  Rick Raffanti,et al.  Centroiding algorithms for high speed crossed strip readout of microchannel plate detectors. , 2011, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment.

[7]  S Weiss,et al.  A space- and time-resolved single photon counting detector for fluorescence microscopy and spectroscopy , 2006, SPIE BiOS.

[8]  J S Hangst,et al.  Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector. , 2009, The Review of scientific instruments.

[10]  Jinshou Tian,et al.  Performance of a visible light photon counting imaging detector for weak light intensities , 2021, Journal of Modern Optics.

[11]  Kozo Okano,et al.  Development of UV image intensifier tube with GaN photocathode , 2008, SPIE Defense + Commercial Sensing.

[12]  J. C. Gsell,et al.  A position sensitive detector for SPIDR - A mission to map the cosmic web , 2003 .

[13]  S. Cox,et al.  Lightsheet fluorescence lifetime imaging microscopy with wide‐field time‐correlated single photon counting , 2019, Journal of biophotonics.

[14]  S. Polyakov,et al.  : Single-photon sources and detectors , 2011 .