Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Enrico Coscelli"'
Autor:
Enrico Coscelli, Andrea Notari, Stefano Lenzini, Luca Vincetti, M. Cerretelli, Federico Melli
A low cost and low-profile multiband 3D antenna for roof-top vehicular applications is presented. The radiating element is obtained through a folded metal sheet shaping a geometry that makes the antenna works in the LTE (Long-Term Evolution) bands. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c0a6274520bf665053c4ea48512d961
https://hdl.handle.net/11380/1211215
https://hdl.handle.net/11380/1211215
Autor:
M. Cerretelli, Luca Vincetti, Federico Melli, Stefano Lenzini, Andrea Notari, Enrico Coscelli, Stefano Selleri
In this study, a low profile wideband 3D antenna for roof-top LTE vehicular applications is presented. The structure consists of folded metal sheets welded together building a geometry that allows covering two LTE bands: 700MHz–960MHz, 1700MHz–27
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f6ed61a10974be50cc6aad1d1a97205
https://hdl.handle.net/11380/1183897
https://hdl.handle.net/11380/1183897
Publikováno v:
Optical and Quantum Electronics. 49
A further output power scaling of Yb-doped double-cladding photonic crystal fiber lasers, required for practical applications in many industrial fields, is currently prevented by thermal effects, which significantly worsen the beam quality. In this w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3398945fe77e6aae99521ba5cfca18e
https://doi.org/10.1007/s11082-017-1157-6
https://doi.org/10.1007/s11082-017-1157-6
Publikováno v:
IEEE Photonics Technology Letters. 26:2454-2457
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ee2d2983a8067cb754e10702b995090
https://doi.org/10.1109/lpt.2014.2358690
https://doi.org/10.1109/lpt.2014.2358690
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 20:544-550
Thulium-doped fiber lasers have recently attracted a growing interest because of the possibility to combine emission around 2 μm with the high beam quality and compactness provided by the fiber medium. A key factor for power scaling of these devices
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6108fd7fd3c96acc2ebe0b5ea17131f
https://doi.org/10.1109/jstqe.2014.2299636
https://doi.org/10.1109/jstqe.2014.2299636
Publikováno v:
SPIE Proceedings.
In the last few years Yb-doped double cladding fibers have become the key component for the development of reliable and high-performance lasers. Despite an effective cooling of the fiber medium, a significant heat load is generated when high pump pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92752085fe013b0cf54cc2b97dccc3f4
https://doi.org/10.1117/12.2230840
https://doi.org/10.1117/12.2230840
Inner cladding influence on large mode area photonic crystal fiber properties under severe heat load
Autor:
Philippe Roy, Aurélien Benoit, Enrico Coscelli, Stefano Selleri, Dia Darwich, K. Schuster, Federica Poli, Raphaël Jamier, Annamaria Cucinotta, Romain Dauliat
Publikováno v:
SPIE Proceedings.
Constant innovations of fiber technology over the last twenty years has fueled a huge improvement of the performances of fiber lasers. Further power scaling of fiber lasers is currently hindered by the phenomenon of transverse mode instabilities, a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad8530064f5a364ffeb9d55cd140f4bc
https://doi.org/10.1117/12.2209491
https://doi.org/10.1117/12.2209491
Publikováno v:
Optical and Quantum Electronics. 48
A new model to study gain competition in high-power fiber amplifiers, which accounts for the full-vector nature of the propagating modes and thermal effects on core overlap, is applied to simulate the performance of an active rod-type fiber under sev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0146e55bff22e52304a78aabeadc1b8a
https://doi.org/10.1007/s11082-016-0493-2
https://doi.org/10.1007/s11082-016-0493-2
Currently, the increase of output power of Yb-doped large mode area photonic crystal fiber lasers, fundamental for many practical industrial applications, is mainly limited by thermal effects, which negatively affect the beam properties. In this work
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7d50076086d5546095e1dc374338416
https://hdl.handle.net/11380/1138587
https://hdl.handle.net/11380/1138587
Autor:
Lasse Leick, Enrico Coscelli, Stefano Selleri, Thomas Tanggaard Alkeskjold, Federica Poli, Annamaria Cucinotta, Jes Broeng, Mette Marie Jørgensen
Publikováno v:
Journal of Lightwave Technology. 30:3494-3499
Power scaling of fiber laser systems requires the development of innovative active fibers, capable of providing high pump absorption, ultralarge effective area, high-order mode suppression, and resilience to thermal effects. Thermally induced refract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1fc3b4a37462a1e779ba52db900e8e1
https://doi.org/10.1109/jlt.2012.2222350
https://doi.org/10.1109/jlt.2012.2222350