Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Richard S. Lepkowicz"'
Publikováno v:
Polymer. 48:624-631
The physical properties of polycarbonate blends containing the nonlinear optical dye lead tetracumylphenoxy phthalocyanine were characterized. Blends with up to 20 wt% dye were prepared and characterized in terms of density, refractive index, glass t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f71ea84cb181cc03640715496b87c8c5
https://doi.org/10.1016/j.polymer.2006.11.008
https://doi.org/10.1016/j.polymer.2006.11.008
Publikováno v:
Journal of Applied Polymer Science. 104:464-469
The blends of a nonlinear optical dye with polycarbonate are described and comparisons are made with solutions of the dye in chloroform. Absorption spectra of blends with up to 1 wt % lead tetracumylphenoxy phtha- locyanine showed the dye to be prima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a75b1734b1f6e6e6fe8c64fd11c41166
https://doi.org/10.1002/app.25857
https://doi.org/10.1002/app.25857
Autor:
Mikhail V. Bondar, David J. Hagan, Alexei D. Kachkovski, Claudiu M. Cirloganu, Richard S. Lepkowicz, Elena I. Mayboroda, Olga V. Przhonska, Yuriy L. Slominsky, Eric W. Van Stryland
Publikováno v:
Chemical Physics. 306:171-183
The determination of the spectral position of the excited states and orientation of the transition dipole moments of polymethine molecules is experimentally measured using two methods: the steady-state fluorescence anisotropy method, and a two-color
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08ddcd6420ba4d0591962a210b624911
https://doi.org/10.1016/j.chemphys.2004.07.021
https://doi.org/10.1016/j.chemphys.2004.07.021
Autor:
Yuriy L. Slominsky, David J. Hagan, Joel M. Hales, Richard S. Lepkowicz, Eric W. Van Stryland, Mikhail V. Bondar, Alexei D. Kachkovski, Olga V. Przhonska, Jie Fu
Publikováno v:
Chemical Physics. 305:259-270
A detailed experimental investigation and quantum-chemical analysis of symmetric cyanines of different conjugation lengths have been performed with the goal of understanding the nature of the electronic transitions in molecules that possess a long ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fd6f3b40e06cb8a43d323692e41042f
https://doi.org/10.1016/j.chemphys.2004.06.063
https://doi.org/10.1016/j.chemphys.2004.06.063
Autor:
Richard S. Lepkowicz, Eric W. Van Stryland, Yuriy L. Slominsky, Joel M. Hales, David J. Hagan, Mikhail V. Bondar, Alexei D. Kachkovski, Olga V. Przhonska
Publikováno v:
Chemical Physics. 286:277-291
Polarization-resolved excitation-probe measurements are performed for a new series of polymethine dyes in several solvents and a polyurethane acrylate elastopolymer. We describe our experimental studies and give an analysis of the nature of the rotat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37b67238e5b1daa50b20f64c394fa8b5
https://doi.org/10.1016/s0301-0104(02)00937-0
https://doi.org/10.1016/s0301-0104(02)00937-0
Autor:
David J. Hagan, Yuriy L. Slominsky, Mikhail V. Bondar, Olga V. Przhonska, Eric W. Van Stryland, Richard S. Lepkowicz, Alexei D. Kachkovski, Evgueni Novikov
Publikováno v:
Chemical Physics. 273:235-248
Time-resolved excitation-probe polarization measurements are performed for polymethine and squarylium dyes in ethanol and an elastopolymer of polyurethane acrylate (PUA). These molecules exhibit strong excited-state absorption in the visible, which r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a02a1dee0b738d043483f817a3f8253
https://doi.org/10.1016/s0301-0104(01)00481-5
https://doi.org/10.1016/s0301-0104(01)00481-5
Autor:
Eric Baer, Guy Beadie, Aditya Ranade, S.R. Flom, Richard S. Lepkowicz, A. Hiltner, James S. Shirk
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
Designing photonic devices using organic nonlinear dye/polymer composites requires an accurate determination of the index. A model of the wavelength and concentration dependence of the index that includes the density dependence is given.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ac49e87632b202d88e1afe2643a1297
https://doi.org/10.1109/cleo.2006.4628020
https://doi.org/10.1109/cleo.2006.4628020
Autor:
Richard S. Lepkowicz, Y. Jin, M.J. Wiggins, James S. Shirk, Eric Baer, Huiwen Tai, E. Fleet, Marie Sandrock, A. Hiltner
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
Nanolayered polymer films were used to construct materials whose properties mimic bio-optic systems found in nature. The nanolayered structures have the unique ability to control the index gradient profile in three dimensions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cdb25387636059c7213b2d7c001fbb4
https://doi.org/10.1109/cleo.2006.4628018
https://doi.org/10.1109/cleo.2006.4628018
Autor:
Aditya Ranade, Huiwen Tai, Richard S. Lepkowicz, A. Hiltner, Guy Beadie, M.J. Wiggins, S.R. Flom, Eric Baer, James S. Shirk
Publikováno v:
(CLEO). Conference on Lasers and Electro-Optics, 2005..
The incorporation of a nonlinear dye into a nanolayered polymer structure has the ability to greatly enhance the nonlinear transmission of the dye. Several characteristics of the nanolayered structured were studied to optimize the effect.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd873a10a6d9de5ea8c837c51c5a7da
https://doi.org/10.1109/cleo.2005.202351
https://doi.org/10.1109/cleo.2005.202351
Femtosecond to Nanosecond Characterization of the excited- state properties of polymethine molecules
Autor:
Yuriy L. Slominsky, Mike V. Bondar, Eric W. Van Stryland, Claudiu M. Cirloganu, Olga V. Przhonska, David J. Hagan, Jie Fu, Richard S. Lepkowicz
Publikováno v:
Nonlinear Optics: Materials, Fundamentals and Applications.
Saturation limits excited-state absorption (ESA) in many organic molecules. We studied polymethines using continuum spectroscopy to determine ESA spectra, two-color pump-probe anisotropy for transition dipole moment orientations, picosecond and nanos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac73ae87465869a174fb68e4356581a1
https://doi.org/10.1364/nlo.2004.fb8
https://doi.org/10.1364/nlo.2004.fb8