Zobrazeno 1 - 10
of 28
pro vyhledávání: '"William J. Miniscalco"'
Autor:
Jagannath Chirravuri, Lal Mohan Bhowmik, William J. Miniscalco, Craig Armiento, Alkim Akyurtlu, Christopher P. Mccarroll
Publikováno v:
2013 IEEE International Symposium on Phased Array Systems and Technology.
A novel approach for the simulation of conformal microstrip patch antenna arrays is presented. 1×2 and 1×4 microstrip arrays operating at 16 GHz were designed and their radiation characteristics were simulated and analyzed as a function of bending.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0eab5d90b3d5b8ceb278f32e8cbbe614
https://doi.org/10.1109/array.2013.6731932
https://doi.org/10.1109/array.2013.6731932
Publikováno v:
Journal of Applied Physics. 76:4472-4478
A nonsaturable component to the 980 nm excited state absorption (ESA) is found in Er3+‐doped silica glass fibers. This anomalous behavior of the ESA provides a way of quantitatively characterizing the degree of clustering in these glasses. It is fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1a1916e9c7fcfc2f11d4c264b3b4723
https://doi.org/10.1063/1.357278
https://doi.org/10.1063/1.357278
Autor:
Michael Howlett, Kirk L. Fisher, Steven A. Lane, William J. Miniscalco, Stephanie Waite, Irl W. Smith
Publikováno v:
Free-Space Laser Communications X.
We have developed an approach to multiple-access lasercom that adopts the commercial paradigm of sharing the most expensive terminal resources among all users. Space-time division multiple access (STDMA), analogous to an optical space-time switch, ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce0446125c84eee7ffbfc33a6c8a45d4
https://doi.org/10.1117/12.859218
https://doi.org/10.1117/12.859218
Publikováno v:
Applied optics. 28(1)
The condition for cw lasing in a four-level system is generalized to include situations where the upper laser level relaxes to the ground state as well as to the lower laser level. It is found that cw lasing is possible in certain cases even when the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14cf48048ffad7cf40526e4a38b534b1
https://pubmed.ncbi.nlm.nih.gov/20548409
https://pubmed.ncbi.nlm.nih.gov/20548409
Autor:
T. Wei, L. J. Andrews, S. Zemon, B. T. Hall, G. Lambert, William J. Miniscalco, Robert C. Folweiler
Publikováno v:
Journal of Applied Physics. 69:6799-6811
The Stark levels of the 4I15/2 ground state manifold have been determined for Er3+‐doped fluorozirconate, fluorophosphate, phosphate, and silicate bulk glasses from fluorescence‐line‐narrowing (FLN) measurements at 4.2 K. Splittings between adj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6f8ff6d0109ca230bfbdb97f71ca3a3
https://doi.org/10.1063/1.347669
https://doi.org/10.1063/1.347669
Publikováno v:
Fiber and Integrated Optics. 10:127-136
The performance and efficiency of erbium-doped fibers pumped in the 800-nm band has been analyzed using a quantitative amplifier model. Both a silica and a fluorophosphate host were investigated. The analysis showed that under optimized conditions th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eea798d3b1ec5d428a07b3508c31aeaf
https://doi.org/10.1080/01468039108201706
https://doi.org/10.1080/01468039108201706
Publikováno v:
Journal of Applied Physics. 75:613-615
An extension of the Judd–Ofelt technique [B. R. Judd, Phys. Rev. 127, 750 (1962)] is introduced in which measured fluorescence branching ratios are incorporated into the calculation of the Judd–Ofelt parameters. It is found that including branchi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90a2dcb1df7b4927864029e608a1a196
https://doi.org/10.1063/1.355794
https://doi.org/10.1063/1.355794
Publikováno v:
SPIE Proceedings.
The current evidence for clustering of erbium ions in silica glass is reviewed, including experiments on fiber amplifier efficiency, excited state decay, and nonsaturable absorption in Er 3+ pumped at 980 nm. Experiments performed by the authors on n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7939c58daa9a3611d0cc028546ca39be
https://doi.org/10.1117/12.168592
https://doi.org/10.1117/12.168592
Publikováno v:
SPIE Proceedings.
Excited-state absorption measurements performed at 980 nm in erbium-doped silica fibers provide evidence that Er 3+ ions undergo clustering to varying degrees, depending on glass composition. The technique employed allows a quantitative characterizat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c76fa6b8eecb405b33943bf1ac6edf34
https://doi.org/10.1117/12.141145
https://doi.org/10.1117/12.141145
Autor:
Andrew Silletti, Wayne F. Sharfin, Ta-Sheng Wei, Richard W. Davies, William J. Miniscalco, Jagannath Chirravuri
Publikováno v:
SPIE Proceedings.
A technique for significantly increasing the pump power in an erbium doped fiber amplifier by multiplexing pump lasers at different wavelengths is demonstrated. Two pump lasers with a wavelength separation of at least 10 nm are combined with an inser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46197d44d90ee682e427ae723bff34c2
https://doi.org/10.1117/12.141131
https://doi.org/10.1117/12.141131