High-efficiency multi-spot beam generation with an all-fiber SMF-SCF structure
High-efficiency multi-spot beam generation with an all-fiber SMF-SCF structure
We propose an efficient, fully fiber-based method for generating multi-spot beam patterns using single-mode fiber (SMF) and square-core fiber (SCF) structures. This technique leverages multimode interference in the SCF to produce configurable square lattice beam patterns, such as 2×2, 3×3, and 4×4 arrays, by simply adjusting the SCF length. Both simulations and experiments at a wavelength of 1060 nm validate the approach, demonstrating high power uniformity, minimal loss, and excellent stability across beam configurations. Initial testing of multi-spot laser drilling on metal surfaces shows that increased beam spot counts can significantly enhance processing efficiency. This SMF-SCF structure offers substantial potential for scalable, compact, and high-precision applications in photonics, laser manufacturing, and biomedical imaging, where rapid processing and parallel operation are critical.
21951-21960
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Vukovic, Natasha
3de33ba9-eb8f-4a06-a65e-4ac0a602a157
Codemard, Christophe A.
7ea03ccf-7305-43c7-9c47-662c3abf2b7b
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
16 May 2025
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Vukovic, Natasha
3de33ba9-eb8f-4a06-a65e-4ac0a602a157
Codemard, Christophe A.
7ea03ccf-7305-43c7-9c47-662c3abf2b7b
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Jung, Yongmin, Vukovic, Natasha, Codemard, Christophe A. and Zervas, Michalis N.
(2025)
High-efficiency multi-spot beam generation with an all-fiber SMF-SCF structure.
Optics Express, 33 (10), .
(doi:10.1364/OE.554649).
Abstract
We propose an efficient, fully fiber-based method for generating multi-spot beam patterns using single-mode fiber (SMF) and square-core fiber (SCF) structures. This technique leverages multimode interference in the SCF to produce configurable square lattice beam patterns, such as 2×2, 3×3, and 4×4 arrays, by simply adjusting the SCF length. Both simulations and experiments at a wavelength of 1060 nm validate the approach, demonstrating high power uniformity, minimal loss, and excellent stability across beam configurations. Initial testing of multi-spot laser drilling on metal surfaces shows that increased beam spot counts can significantly enhance processing efficiency. This SMF-SCF structure offers substantial potential for scalable, compact, and high-precision applications in photonics, laser manufacturing, and biomedical imaging, where rapid processing and parallel operation are critical.
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Submitted date: 2025
Accepted/In Press date: 1 May 2025
Published date: 16 May 2025
Identifiers
Local EPrints ID: 501520
URI: http://eprints.soton.ac.uk/id/eprint/501520
ISSN: 1094-4087
PURE UUID: 5ce97ea8-1fb0-4449-8666-f22b49bb6742
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Date deposited: 03 Jun 2025 16:37
Last modified: 04 Sep 2025 02:10
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Contributors
Author:
Yongmin Jung
Author:
Natasha Vukovic
Author:
Christophe A. Codemard
Author:
Michalis N. Zervas
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