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Femtosecond Er-doped fiber laser source tunable from 872 to 1075 nm for two-photon vision studies in humans
Abstract
We report the development of a widely-tunable femtosecond fiber laser system and its application for two-photon vision studies. The source is based on an Er-doped fiber laser with spectral shift up to 2150 nm, followed by a second harmonic generation module to generate a frequency-doubled beam tunable from 872 to 1075 nm. The source delivers sub-230 fs pulses with nearly-constant duration over the entire tuning range, with output powers between 0.68–1.24 mW, which corresponds to a pulse energy of 13.2–24.1 pJ. Such pulse energy is sufficient for employing a system for measurements of two-photon scotopic spectral sensitivity of two-photon vision in humans. The laser parameters allow for very efficient and safe two-photon stimulation of the human visual system, as proved by a good separation between one- and two-photon thresholds for wavelengths below 950 nm, which we have confirmed for 3 healthy subjects.
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Authors (7)
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Dorota Stachowiak
- Laser & Fiber Electronics Group, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology
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Jakub Bogusławski
- International Centre for Translational Eye Research
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Zbigniew Łaszczych
- Laser & Fiber Electronics Group, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology
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Katarzyna Komar Dr inż.
- International Centre for Translational Eye Research
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Maciej Wojtkowski Prof. dr hab.
- Department of Physical Chemistry of Biological Systems, Institute of Physical Chemistry, Polish Academy of Sciences
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Grzegorz Soboń dr hab. inż.
- Laser & Fiber Electronics Group, Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1364/BOE.452609
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Biomedical Optics Express
no. 13,
pages 1899 - 1911,
ISSN: 2156-7085 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Stachowiak D., Marzejon M., Bogusławski J., Łaszczych Z., Komar K., Wojtkowski M., Soboń G.: Femtosecond Er-doped fiber laser source tunable from 872 to 1075 nm for two-photon vision studies in humans// Biomedical Optics Express -Vol. 13,iss. 4 (2022), s.1899-1911
- DOI:
- Digital Object Identifier (open in new tab) 10.1364/boe.452609
- Sources of funding:
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- Fundacja na rzecz Nauki Polskiej (First TEAM/2017-4/39, MAB/2019/12, TEAM TECH/2016-3/20); Narodowe Centrum Nauki (2016/23/B/ST2/00752)
- Verified by:
- Gdańsk University of Technology
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