Zobrazeno 1 - 10
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pro vyhledávání: '"G. Ronald Hadley"'
Autor:
G. Ronald Hadley
Publikováno v:
Journal of Computational Physics. 203:358-370
An iterative procedure is described for the solution of the indefinite Helmholtz equation that is a two-step generalization of classic Jacobi iteration using complex iteration parameters. The method converges for well-posed problems at a rate depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f6967997665d975625f062a76e3875b
https://doi.org/10.1016/j.jcp.2004.09.015
https://doi.org/10.1016/j.jcp.2004.09.015
Autor:
G. Ronald Hadley
Publikováno v:
AEU - International Journal of Electronics and Communications. 58:86-92
Finite difference equations are derived for the simulation of dielectric waveguides using an Hz-Ez formulation defined on a nonuniform triangular grid. The resulting equations may be solved as a banded eigenproblem for waveguide structures of arbitra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6cff99ba64819b872489d6e8a5a66cc
https://doi.org/10.1078/1434-8411-54100212
https://doi.org/10.1078/1434-8411-54100212
Autor:
Joel R. Wendt, Lorena I. Basilio, Sally Samora, Shanalyn A. Kemme, Paul Davids, Hung Loui, William A. Johnson, G. Ronald Hadley, David W. Peters, A. A. Cruz-Cabrera
Plasmonic structures open up new opportunities in photonic devices, sometimes offering an alternate method to perform a function and sometimes offering capabilities not possible with standard optics. In this LDRD we successfully demonstrated metal co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3277cab8bbcdbdbd2a6e6201afb7d850
https://doi.org/10.2172/974868
https://doi.org/10.2172/974868
Publikováno v:
SPIE Proceedings.
We review what we have learned in the last few years from modeling nanosecond fiber amplifiers. We have developed a number of models that treat bent fiber mode profiles and bend loss, plus gain models and models of nonlinear processes such as self ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c60ffe7302c21f01530d13b175a32f
https://doi.org/10.1117/12.807204
https://doi.org/10.1117/12.807204
Autor:
David W. Peters, G. Ronald Hadley
Publikováno v:
Advances in Optical Sciences Congress.
The complex Jacobi iterative method was recently developed for Helmholtz analysis of normal dielectrics. Here we update the derivation to allow metallic structures and apply the method to analyze mid-IR transmission through a frequency-selective surf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c2f990e8d34eb8e62041e892d0bc779
https://doi.org/10.1364/ipnra.2009.itud1
https://doi.org/10.1364/ipnra.2009.itud1
Publikováno v:
Optical and Quantum Electronics. 23:S959-S965
We fabricated and tested implanted, planar-buried heterostructure, graded-index, separate confinement heterostructure (IPBH-GRINSCH) lasers in various waveguide geometries. These devices were also numerically simulated with a two-dimensional waveguid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8abfd478f6631895466a496ce5ed2ae1
https://doi.org/10.1007/bf00624984
https://doi.org/10.1007/bf00624984
Publikováno v:
OPTICS EXPRESS
A new complex Jacobi iterative technique adapted for the solution of three-dimensional (3D) wide-angle (WA) beam propagation is presented. The beam propagation equation for analysis of optical propagation in waveguide structures is based on a novel m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7560dd2c2b1b45f052693ba9f950b341
https://pubmed.ncbi.nlm.nih.gov/18852812
https://pubmed.ncbi.nlm.nih.gov/18852812
Autor:
Guillermo M. Loubriel, Lars D. Roose, Gregory M. Peake, Charles T. Sullivan, Alan Mar, Victoria A. Montano, Gordon Arthur Keeler, Thomas Bauer, Darwin K. Serkland, Kent Martin Geib, G. Ronald Hadley
Advanced optically-activated solid-state electrical switch development at Sandia has demonstrated multi-kA/kV switching and the path for scalability to even higher current/power. Realization of this potential requires development of new optical sourc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cd2efd50de02c9bdcadf6500e3d8f40
https://doi.org/10.2172/1018477
https://doi.org/10.2172/1018477
Autor:
Wen L. Hsu, Ray P. Bambha, W. Joseph Thomes, K. Simmons-Potter, Sean W. Moore, Randal L. Schmitt, Georg Wien, Paul E. Schrader, Arlee V. Smith, B. P. Fox, Andrea Hansen, Mircea Hotoleanu, Dahv A. V. Kliner, Jean-Philippe Fève, Mikko Söderlund, G. Ronald Hadley, Alexandra A. Hoops, Roger L. Farrow, Joona Koponen, Hanna J. Hoffman, Binh T. Do, Joseph H. Simmons, Jeffrey P. Koplow
Publikováno v:
Laser Source Technology for Defense and Security IV.
Sandia National Laboratories' program in high-power fiber lasers has emphasized development of enabling technologies for power scaling and gaining a quantitative understanding of fundamental limits, particularly for high-peak-power, pulsed fiber sour
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d477baabdd38c0850a46084e52b6f04
https://doi.org/10.1117/12.782227
https://doi.org/10.1117/12.782227
Autor:
G. Ronald Hadley
Publikováno v:
OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.
The operation of fiber lasers and amplifiers in new higher-power regimes for machining applications is limited by several nonlinear effects that must be understood and mitigated against for further development of these sources.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7406d16bcfd82655d106e63b9882a495
https://doi.org/10.1109/ofc.2008.4528567
https://doi.org/10.1109/ofc.2008.4528567