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Updated: Jan 10, 2026

Open Source High Content Analysis Utilizing Automated Fluorescence Lifetime Imaging Microscopy
Published on: January 18, 2017
Research on the frequency domain characteristics of the iris time in image intensifiers
Dong Li1, Kaixiang Yang1, Langlang Li1
1State Key Lab of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, Shanxi 710024, China.
Abstract:
The iris time is a critical parameter for high-speed gated image intensifiers. Current research primarily focuses on its characteristics in the time domain, with limited analysis of its frequency domain response. This paper investigates the frequency domain response of the radial micro-element model of image intensifiers and identifies the relationship between the iris time and the S-parameters. We propose using the frequency domain S-parameters to evaluate the iris time. Through time-domain and frequency-domain electromagnetic simulations of the image intensifier, we confirm a linear relationship between the iris time and the S-parameters. Experimental results demonstrate that the error in evaluating the iris time using S-parameters is less than 0.04 ns.
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