Zobrazeno 1 - 10
of 269
pro vyhledávání: '"A. Douglas Stone"'
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:
Li Ge, A. Douglas Stone
Publikováno v:
Physical Review X, Vol 4, Iss 3, p 031011 (2014)
We consider the role of degeneracy in parity-time (PT) symmetry breaking for non-Hermitian wave equations beyond one dimension. We show that if the spectrum is degenerate in the absence of T breaking, and T is broken in a generic manner (without pres
Externí odkaz:
https://doaj.org/article/87ddf9c7b11c453abc5841903d794f66
Autor:
Philipp Ambichl, Konstantinos G. Makris, Li Ge, Yidong Chong, A. Douglas Stone, Stefan Rotter
Publikováno v:
Physical Review X, Vol 3, Iss 4, p 041030 (2013)
PT-symmetric scattering systems with balanced gain and loss can undergo a symmetry-breaking transition in which the eigenvalues of the nonunitary scattering matrix change their phase shifts from real to complex values. We relate the PT-symmetry-break
Externí odkaz:
https://doaj.org/article/db387c94b6334f9685db9907fe9807ab
Publikováno v:
PhytoKeys, Vol 118, Iss , Pp 89-103 (2019)
Based on morphological and phylogenetic evidence, a new genus of Melastomataceae (Melastomateae), Nothodissotis Veranso-Libalah & G.Kadereit, gen. nov., is described from Atlantic Central Africa. Nothodissotis is distinguished from other African Mela
Externí odkaz:
https://doaj.org/article/f516cf5433a04f2a8c7bbf6571139d18
Publikováno v:
PhytoKeys, Vol 82, Iss , Pp 113-121 (2017)
A new species from the wet miombo woodlands of Tanzania and Angola, Argyrella richardsiae Veranso-Libalah & G.Kadereit, sp. nov. (Melastomataceae, Melastomateae), is described and illustrated. Although the widespread Argyrella canescens also occurs i
Externí odkaz:
https://doaj.org/article/f5db61d9abae4c9e89d6c3d1f96188a6
Publikováno v:
Advances in Optics and Photonics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::698e6e8cb47e0751428d44bc62305747
https://doi.org/10.1364/aop.475477
https://doi.org/10.1364/aop.475477
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.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4c9988e8846d9d7b78b8aa6dcd56d3d
https://doi.org/10.1117/12.2649470
https://doi.org/10.1117/12.2649470
Publikováno v:
Fiber Lasers XX: Technology and Systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73841b419dad46b0ab57ed0fad41077d
https://doi.org/10.1117/12.2649461
https://doi.org/10.1117/12.2649461