Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Landa Hoke"'
Autor:
Landa Hoke, Lynne A. Samuelson, David Waller, Jayant Kumar, Stephen A. Fossey, Russell Gaudiana, Ravi Mosurkal
Publikováno v:
Journal of Macromolecular Science, Part A. 43:1907-1922
We have synthesized novel aromatic amine‐substituted acridine dyes as potential candidates for the photosensitizers in dye sensitized nanocrystalline semiconductor based solar cells (DSSC) cells. The protonation and quaternization of the acridine n
Autor:
Uladzimir A. Hrozhyk, Nelson V. Tabiryan, Diane M. Steeves, Svetlana V. Serak, Landa Hoke, Brian R. Kimball
Publikováno v:
SPIE Proceedings.
We study optical switching properties of novel azobenzene liquid crystal (azo LC) material systems based on mesogenic azo dyes distinguished by enhanced absorption in the visible spectrum and a short lifetime of the photoexcited state. Due to their m
Autor:
Michael Ghebrebrhan, David Ziegler, Landa Hoke, Francisco J. Aranda, Deana Archambault, Brian R. Kimball, Megan L. Hoey, Lauren Belton, Jeffrey Perry, Joel B. Carlson
Publikováno v:
Optical Materials Express. 4:2656
Extruded polymer fibers with submillimeter diameters are considered for tailored optical and near-IR properties. Retroreflection of light is demonstrated. Simulated and measured reflection spectra are compared and found to agree. Additional simulatio
Publikováno v:
SPIE Proceedings.
A numerical parametric investigation using a 2-level factorial design of experiments was performed to determine the effect of the f-number, sample position, sample thickness and the number of passes through the nonlinear optical sample on the beam tr
Publikováno v:
SPIE Proceedings.
A strategy for protecting and improving the performance of a nonlinear optical device exposed to a high-energy beam is numerically investigated. In this strategy, a thermally stimulated defocusing material is used in combination with a RSA material.
Autor:
Paula Rosenof, Landa Hoke, Masato Nakashima, Barry S. DeCristofano, Devulapalli V. G. L. N. Rao, Desai Narayana Rao, Brian R. Kimball, Gregory J. Kowalski
Publikováno v:
SPIE Proceedings.
The optical transmission processes for a nonlinear optical (NLO) material are influenced by the properties of its environment. NLO properties such as intersystem crossing rates may be altered by characteristics of the host such as polarity. The effec
Publikováno v:
SPIE Proceedings.
The application of a numerical algorithm to the design procedure of a multi-cell limiter (MCL) is discussed and calculated numerical results are compared to experimental results. This application illustrates the ability to predict optical limiting un
Publikováno v:
SPIE Proceedings.
The application of a numerical algorithm to the design procedure of a multicell stepped limiter (MCSL) is discussed. This application illustrates the ability to predict thermal damage and the thermal lensing effects that occur within the stepped limi
Information systems are becoming increasingly more important for effective functioning and competitiveness of scientific research groups, such as our laser eye protection (LEP) team. The Lotus Notes(copyright) application software has been used as pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2080875e620b23db6c9c8d00cd5e6ac
https://doi.org/10.21236/ada415651
https://doi.org/10.21236/ada415651
Autor:
Landa Hoke, Uladzimir A. Hrozhyk, Diane M. Steeves, Brian R. Kimball, Nelson V. Tabiryan, Svetlana V. Serak
Publikováno v:
Optics Express. 18:8697
This study compares optical switching capabilities of liquid crystal (LC) materials based on different classes of azobenzene dyes. LCs based on molecules containing benzene rings with nearly symmetrical pi-pi conjugation respond more efficiently to a