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High-efficiency rad...
High-efficiency radiation-balanced Yb-doped silica fiber laser with 200-mW output
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- Balliu, Enkeleda, PhD student (author)
- Mittuniversitetet,Institutionen för ingenjörsvetenskap, matematik och ämnesdidaktik (2023-),Stanford University, Stanford, US
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Meehan, B. (author)
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Cahoon, M. A. (author)
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Hawkins, T. W. (author)
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Ballato, J. (author)
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Dragic, P. D. (author)
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Boilard, T. (author)
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Talbot, L. (author)
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Bernier, M. (author)
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Digonnet, M. J. F. (author)
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(creator_code:org_t)
- Optica Publishing Group, 2024
- 2024
- English.
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In: Optics Letters. - : Optica Publishing Group. - 0146-9592 .- 1539-4794. ; 49:8, s. 2021-2024
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The focus of this study was the development of a second generation of fiber lasers internally cooled by anti-Stokes fluorescence. The laser consisted of a length of a single-mode fiber spliced to fiber Bragg gratings to form the optical resonator. The fiber was single-moded at the pump (1040 nm) and signal (1064 nm) wavelengths. Its core was heavily doped with Yb, in the initial form of CaF2 nanoparticles, and co-doped with Al to reduce quenching and improve the cooling efficiency. After optimizing the fiber length (4.1 m) and output-coupler reflectivity (3.3%), the fiber laser exhibited a threshold of 160 mW, an optical efficiency of 56.8%, and a radiation-balanced output power (no net heat generation) of 192 mW. On all three metrics, this performance is significantly better than the only previously reported radiation-balanced fiber laser, which is even more meaningful given that the small size of the single-mode fiber core (7.8-µm diameter). At the maximum output power (∼2 W), the average fiber temperature was still barely above room temperature (428 mK). This work demonstrates that with anti-Stokes pumping, it is possible to induce significant gain and energy storage in a small-core Yb-doped fiber while keeping the fiber cool.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Balliu, Enkeleda ...
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Meehan, B.
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Cahoon, M. A.
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Hawkins, T. W.
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Ballato, J.
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Dragic, P. D.
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show more...
-
Boilard, T.
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Talbot, L.
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Bernier, M.
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Digonnet, M. J. ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Optics Letters
- By the university
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Mid Sweden University