Single-Photon Imaging for Astronomy and Aerospace Applications

Magnan, Pierre

doi:10.1007/978-3-642-18443-7_13

Cited by 1 publication

(3 citation statements)

References 48 publications

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“…These charge pulses are subsequently transmitted to the readout circuits, which determine the electron cloud’s central location; that is, the coordinates of the incident photons. After accumulation for a certain period of time, it is possible to construct two-dimensional images indicating the intensity and outline of aerospace objects [ 12 , 17 ].…”

Section: Design Of the Detection System With Photon Countingmentioning

confidence: 99%

“…As illustrated in Figure 6 , the CSA consists of an operational transconductance amplifier (OTA), a feedback resistor R f , a feedback capacitor C f and a load capacitance C L [ 12 ]. The MCP detector is modeled as a capacitor C D in parallel with the anode’s current pulse I D .…”

Section: Design Of the Detection System With Photon Countingmentioning

confidence: 99%

“…Meanwhile, the intensity in Earth’s polar caps can be as low as 100 Rayleigh [ 8 , 11 ]. To accurately obtain the aurora morphological distribution over time and space, the detection system must accommodate not only intense radiation, but also weak signals with a wide dynamic response [ 12 ]. According to the requirements for the specific scientific objectives, the main index of the WAI instrument is designed.…”

Section: Introductionmentioning

confidence: 99%

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Photon Counting Imaging with Low Noise and a Wide Dynamic Range for Aurora Observations

Han

Song

Zhang

et al. 2020

Sensors

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The radiation intensity of observed auroras in the far-ultraviolet (FUV) band varies dramatically with location for aerospace applications, requiring a photon counting imaging apparatus with a wide dynamic range. However, combining high spatial resolution imaging with high event rates is technically challenging. We developed an FUV photon counting imaging system for aurora observation. Our system mainly consists of a microchannel plate (MCP) stack readout using a wedge strip anode (WSA) with charge induction and high-speed electronics, such as a charge sensitive amplifier (CSA) and pulse shaper. Moreover, we constructed an anode readout model and a time response model for readout circuits to investigate the counting error in high counting rate applications. This system supports global rates of 500 kilo counts, 0.610 dark counts s−1 cm−2 at an ambient temperature of 300 K and 111 µm spatial resolution at 400 kilo counts s−1 (kcps). We demonstrate an obvious photon count loss at incident intensities close to the counting capacity of the system. To preserve image quality, the response time should be improved and some noise performance may be sacrificed. Finally, we also describe the correlation between counting rate and imaging resolution, which further guides the design of space observation instruments.

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Section: Design Of the Detection System With Photon Countingmentioning

confidence: 99%

Section: Design Of the Detection System With Photon Countingmentioning

confidence: 99%