Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Kabish Wisal"'
Publikováno v:
APL Photonics, Vol 9, Iss 6, Pp 066114-066114-18 (2024)
Transverse Mode Instability (TMI) that results from dynamic nonlinear thermo-optical scattering is the primary limitation to power scaling in high-power fiber lasers and amplifiers. It has been proposed that TMI can be suppressed by exciting multiple
Externí odkaz:
https://doaj.org/article/8acc79af3f824670b7751cc78c37f263
Publikováno v:
Physical Review X, Vol 14, Iss 3, p 031053 (2024)
Stimulated Brillouin scattering (SBS) is often an unwanted loss mechanism in both active and passive fibers. Highly multimode excitation of fibers has been proposed as a novel route toward efficient SBS suppression. Here, we develop a detailed, quant
Externí odkaz:
https://doaj.org/article/8374a7a69a1c424db8e0dafa29bad5a8
Autor:
Chun-Wei Chen, Linh V. Nguyen, Kabish Wisal, Shuen Wei, Stephen C. Warren-Smith, Ori Henderson-Sapir, Erik P. Schartner, Peyman Ahmadi, Heike Ebendorff-Heidepriem, A. Douglas Stone, David J. Ottaway, Hui Cao
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract The key challenge for high-power delivery through optical fibers is overcoming nonlinear optical effects. To keep a smooth output beam, most techniques for mitigating optical nonlinearities are restricted to single-mode fibers. Moving out of
Externí odkaz:
https://doaj.org/article/e184fcd1b96743c8993c03c39130f2ec
Autor:
Kabish Wisal, Chun-Wei Chen, Zeyu Kuang, Stephen C. Warren-Smith, Owen D. Miller, Hui Cao, A. Douglas Stone
Publikováno v:
Physics and Simulation of Optoelectronic Devices XXXI.
Publikováno v:
Fiber Lasers XX: Technology and Systems.
High-power fiber laser amplifiers have enabled an increasing range of applications in industry, science, and defense. The power scaling for fiber amplifiers is currently limited by transverse mode instability. Most techniques for suppressing the inst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b22f69f19079e0e666ef5553ef57eaff
http://arxiv.org/abs/2206.15438
http://arxiv.org/abs/2206.15438
Publikováno v:
Journal of Biomedical Optics. 27
Significance: Monitoring the movement and vital signs of patients in hospitals and other healthcare environments is a significant burden on healthcare staff. Early warning systems using smart bed sensors hold promise to relieve this burden and improv
Autor:
Kabish Wisal, Stephen C. Warren-Smith, Chun-Wei Chen, Ryan Behunin, Hui W. Cao, A. Douglas Stone
Publikováno v:
Physics and Simulation of Optoelectronic Devices XXX.
Publikováno v:
Nanophotonics, Vol 10, Iss 1, Pp 343-360 (2020)
We outline a recently developed theory of impedance-matching, or reflectionless excitation of arbitrary finite photonic structures in any dimension. It describes the necessary and sufficient conditions for perfectly reflectionless excitation to be po
Publikováno v:
Frontiers in Optics + Laser Science 2022 (FIO, LS).
We demonstrate theoretically that SBS threshold can be increased significantly by many-mode excitations in multimode fibers. We experimentally focus multimode excitation to a diffraction limited spot, leading to high SBS threshold with good beam qual