Time-resolved imaging correction of irising effect of gated image intensifiers

Xin Zhong; Xinwei Wang; Liang Sun; Yan Zhou

doi:10.1117/12.3007212

18 December 2023 Time-resolved imaging correction of irising effect of gated image intensifiers

Xin Zhong, Xinwei Wang, Liang Sun, Yan Zhou

Proceedings Volume 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics; 129630Q (2023) https://doi.org/10.1117/12.3007212
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

It needs a triggered time to open or close optical gate of the ICCD. The duration time is defined as irising effect time. Although it only lasts a few nanoseconds and often be ignored by users, it can still interfere with the results in some applications such as fluorescence lifetime imaging and gated imaging. This paper proposes a fitting algorithm to correct the irising effect of the image intensifier. This method obtains fitting matrices of different gates through a series delay images of ICCD. Then through these fitting matrices, the imaging pictures are effectively corrected. The advantages of this method are low cost, high efficiency, and simplicity. The verification experiment of this paper is to write letters with a highlighter. The correction algorithm can clearly restore time-resolve image, and significantly improve the contrast of the image.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xin Zhong, Xinwei Wang, Liang Sun, and Yan Zhou "Time-resolved imaging correction of irising effect of gated image intensifiers", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 129630Q (18 December 2023); https://doi.org/10.1117/12.3007212

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KEYWORDS

Image intensifiers

Fluorescence

Fluorescence intensity

Charge-coupled devices

Imaging systems

Microchannel plates

Pulsed laser operation

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