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Abstract
Pulsed near-infrared (NIR) light sources can be successfully applied for both imaging and functional testing of the human eye, as published recently1. These two groups of applications have different requirements. For imaging applications, the most preferable is invisible scanning beam while efficiently visible stimulating beam is preferable for functional testing applications. The functional testing of human eye using NIR laser beams is possible due to two-photon vision (2PV) phenomenon. 2PV enables perception of pulsed near-infrared laser light as color corresponding to approximately half of the laser wavelength2. This study aims to characterize two-photon vision thresholds for various pulse lengths from a solid- state sub-picosecond laser (λc = 1043.3 nm, Frep = 62.65 MHz), either of 253 fs duration or elongated by Martinez- type stretcher to 2 ps, and fiber-optic picosecond laser (λc = 1028.4 nm, Frep = 19.19 MHz, p = 12.2 ps).
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Authors (4)
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Maciej Wojtkowski Prof. dr hab.
- International Ctr. for Translational Eye Research
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Łukasz Kornaszewski
- International Ctr. for Translational Eye Research
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Katarzyna Komar Dr inż.
- International Ctr. for Translational Eye Research
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Proceedings of SPIE
no. 11623,
pages 1 - 6,
ISSN: 0277-786X - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Marzejon M., Wojtkowski M., Kornaszewski Ł., Komar K.: Effects of laser pulse duration in two-photon vision threshold measurements// Proceedings of SPIE -Vol. 11623, (2021), s.1-6
- DOI:
- Digital Object Identifier (open in new tab) 10.1117/12.2582735
- Sources of funding:
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- This work was supported by Narodowe Centrum Nauki (2016/23/B/ST2/00752), Fundacja na rzecz Nauki Polskiej (MAB/2019/12, POIR.04.04.00-00- 3D47/16-00), and Ministerstwo Nauki i Szkolnictwa Wyższego (2016-2019). The 2x2 PhotonVis project no. POIR.04.04.00-00-3D47/16-00 is carried out within the TEAM TECH programme of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund. The International Centre for Translational Eye Research (MAB/2019/12) project is carried out within the International Research Agendas programme of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund.
- Verified by:
- Gdańsk University of Technology
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