Using time-correlated single-photon counting technique on SPAD sensors to enhance acquisition time and dynamic range

Victor Moro; Sergio Moreno; Oscar Alonso; Anna Vilà; Juan D. Prades; Angel Diéguez

doi:10.1117/12.2641176

30 December 2022 Using time-correlated single-photon counting technique on SPAD sensors to enhance acquisition time and dynamic range

Victor Moro, Sergio Moreno, Oscar Alonso, Anna Vilà, Juan D. Prades, Angel Diéguez

Author Affiliations +

Proceedings Volume 12316, Advanced Optical Imaging Technologies V; 123160K (2022) https://doi.org/10.1117/12.2641176
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

In modern single pixel microscopy techniques, like Nano-Illumination Microscopy, long measurement times can become a major issue, especially when imaging biological tissues with large field of view. Usually, light intensity measurements are performed with CMOS pixels, with typical integration times around tens of milliseconds. In this work, we propose to obtain a light intensity measurement indirectly by applying statistical techniques to the photon arrival times gathered with an SPAD photodetector. We will present how the different statistical measurements can be used to minimize the total acquisition time and minimize also the hardware required. In this work, with captures of 256 SPAD measurements, reducing measurement time from 50ms to 50us. The dynamic range is extended by combining multiple statistical techniques with standard intensity measurements. This paves the way to practical Nano-Illumination Microscopy and other single pixel microscopy techniques.

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Victor Moro, Sergio Moreno, Oscar Alonso, Anna Vilà, Juan D. Prades, and Angel Diéguez "Using time-correlated single-photon counting technique on SPAD sensors to enhance acquisition time and dynamic range", Proc. SPIE 12316, Advanced Optical Imaging Technologies V, 123160K (30 December 2022); https://doi.org/10.1117/12.2641176

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