Laser pulse train parameters determine the brightness of a two-photon stimulus

This report presents the results of measurements of the two-photon vision threshold for various pulse trains. We employed three pulsed near-infrared lasers and pulse stretchers to obtain variations of the pulse duty cycle parameter over three orders of magnitude. We proposed and extensively describe...

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Published inBiomedical optics express Vol. 14; no. 6; pp. 2857 - 2872
Main Authors Marzejon, Marcin J., Kornaszewski, Łukasz, Wojtkowski, Maciej, Komar, Katarzyna
Format Journal Article
LanguageEnglish
Published United States Optica Publishing Group 01.06.2023
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Summary:This report presents the results of measurements of the two-photon vision threshold for various pulse trains. We employed three pulsed near-infrared lasers and pulse stretchers to obtain variations of the pulse duty cycle parameter over three orders of magnitude. We proposed and extensively described a mathematical model that combines the laser parameters with the visual threshold value. The presented methodology enables one to predict the visual threshold value for a two-photon stimulus for a healthy subject while using a laser source of known parameters. Our findings would be of value to laser engineers and the community interested in nonlinear visual perception.
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ISSN:2156-7085
2156-7085
DOI:10.1364/BOE.489890