Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Sham N. Dixit"'
Autor:
Sham N. Dixit, J. A. Speth, Stephen A. Payne, Alison Kubota, Jeffery F. Latkowski, M.J. Caturla
Publikováno v:
Fusion Science and Technology. 43:540-558
The survivability of the final optic, which must sit in the line of sight of high-energy neutrons and gamma rays, is a key issue for any laser-driven inertial fusion energy (IFE) concept. Previous ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57537929b39917ef7954139e1402bf66
https://doi.org/10.13182/fst43-540
https://doi.org/10.13182/fst43-540
Autor:
Matt Rever, Carla Hardy, Steve Yang, Sham N. Dixit, Jean-Michel Di-Nicola, Eddy Tse, JoAnn Matone, Mark R. Hermann, G Brunton, Charles D. Orth, Abdul A. S. Awwal, Mitanu Paul, John E. Heebner
Publikováno v:
SPIE Proceedings.
Programmable spatial shapers using liquid-crystal-based spatial-light-modulators in the National Ignition Facility lasers enable spatial shaping of the beam profile so that power delivered to the target can be maximized while maintaining system longe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87f623372da3d7859f9a2bc21deb1848
https://doi.org/10.1117/12.2008542
https://doi.org/10.1117/12.2008542
Autor:
Laura D. DeLoach, J.B. Tassano, Stephen A. Payne, W. L. Kway, William F. Krupke, Sham N. Dixit
Publikováno v:
Journal of Luminescence. 62:85-94
We have determined the ground state energy levels of Yb 3+ in crystals with the apatite structure from the low temperature emission spectra of Yb-doped crystals of calcium, strontium and barium fluorophosphates, calcium chlorophosphate and strontium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39964cf1f2a70ad69aab01854acc35f2
https://doi.org/10.1016/0022-2313(94)90013-2
https://doi.org/10.1016/0022-2313(94)90013-2
Autor:
Ed Marley, Michael Scanlan, Justin E. Wolfe, Jeff D. Bude, Mark R. Hermann, S. Hunter, Paul J. Wegner, Mark Franks, G Brunton, T. Budge, John E. Heebner, Michael R. Borden, Eddy Tse, K. Christensen, Dan Walmer, Abdul A. S. Awwal, Christopher J. Stolz, N. Wong, Kelly McCarty, Kevin G. Williams, Marcus V. Monticelli, Phil Miller, Mark A. Henesian, Sham N. Dixit, C. Clay Widmayer, Lynn G. Seppala, Chris Haynam, Jean-Michel Di-Nicola, Tayyab I. Suratwala
Publikováno v:
SPIE Proceedings.
A system of customized spatial light modulators has been installed onto the front end of the laser system at the National Ignition Facility (NIF). The devices are capable of shaping the beam profile at a low-fluence relay plane upstream of the amplif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::992c13be52d67972654db8a93fe4aaf3
https://doi.org/10.1117/12.875794
https://doi.org/10.1117/12.875794
Autor:
Sumit Mazumdar, F. Jarka, F. Kajzar, Sham N. Dixit, Yutaka Kawabe, Dandan Guo, Nasser Peyghambarian
Publikováno v:
Physical Review B. 48:1433-1459
We report experimental and theoretical investigations of electroabsorption in a polydiacetylene, and determine the complete mechanism of third-harmonic generation (THG) and two-photon absorption (TPA) in linear-chain \ensuremath{\pi}-conjugated polym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::716173192adb1656133a893c75826328
https://doi.org/10.1103/physrevb.48.1433
https://doi.org/10.1103/physrevb.48.1433
Publikováno v:
Synthetic Metals. 57:3881-3888
Theoretical description of optical nonlinearity in π-conjugated polymers must necessarily include both the on-site and the intersite electron correlations. We show that only three dominant nonlinear optical channels, involving four “essential stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb484b0e462fa3327eb84605bf43855f
https://doi.org/10.1016/0379-6779(93)90529-6
https://doi.org/10.1016/0379-6779(93)90529-6
Autor:
Michael Scanlan, Mark Franks, Kelly McCarty, John E. Heebner, Dan Walmer, Lynn G. Seppala, Mark R. Hermann, T. Budge, Paul J. Wegner, Mark A. Henesian, N. Wong, Chris Stolz, Kevin G. Williams, Marcus V. Monticelli, Tayyab I. Suratwala, K. Christensen, C. Clay Widmayer, Eddy Tse, Abdul A. S. Awwal, Jeff D. Bude, Sham N. Dixit, Jean-Michel Di-Nicola, C. A. Haynam, Michael R. Borden, Justin E. Wolfe, Phil Miller, G Brunton, Ed Marley, S. Hunter
Publikováno v:
SPIE Proceedings.
Customized spatial light modulators have been designed and fabricated for use as precision beam shaping devices in fusion class laser systems. By inserting this device in a low-fluence relay plane upstream of the amplifier chain, "blocker" obscuratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::180e4f24d9aad647c17cb4c20c473842
https://doi.org/10.1117/12.867728
https://doi.org/10.1117/12.867728
Autor:
Sham N. Dixit, Dandan Guo, Yutaka Kawabe, F. Kajzar, Nasser Peyghambarian, Sumit Mazumdar, F. Jarka
Publikováno v:
Synthetic Metals. 50:517-523
The electro-absorption in a DCH-polydiacetylene has been investigated both experimentally and theoretically. In addition to the red Stark shift of the exciton, a significant feature in the difference spectrum is observed at a higher energy. Within an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c322198d8ee706333a9ed438621212a3
https://doi.org/10.1016/0379-6779(92)90207-y
https://doi.org/10.1016/0379-6779(92)90207-y
Publikováno v:
Synthetic Metals. 49:1-11
We develop a physical, intuitive description of optical nonlinearity in conjugated polymers within a completely general microscopic theoretical model. It is shown that third-harmonic generation and electro-absorption give complimentary information on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8a8429884b31be60d0b6bfd24cd281
https://doi.org/10.1016/0379-6779(92)90068-t
https://doi.org/10.1016/0379-6779(92)90068-t
Publikováno v:
The Journal of Chemical Physics. 96:6862-6867
Optical nonlinearity in π‐conjugated polyenes depends crucially on a single two‐photon state that is located above the one‐photon allowed exciton. In the case of the infinite polyene this single state should be thought of as a collection of st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc3b3cec2afeb798e9029596e04e7d1f
https://doi.org/10.1063/1.462576
https://doi.org/10.1063/1.462576