Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Roger L. Farrow"'
Publikováno v:
Optics Communications. 284:5774-5780
Recent advances in power scaling of Yb+ 3-doped fiber lasers to the kilowatt level suggest a need to examine the performance of Yb+ 3-doped silica at temperatures well above ambient. We report experimental results for the absorption coefficient, emis
Autor:
Zhi Liu, Hendrik Bluhm, Farid El Gabaly, Zahid Hussain, Chunjuan Zhang, Michael E. Grass, Steven C. DeCaluwe, Bryan W. Eichhorn, Gregory S. Jackson, Mark Linne, Roger L. Farrow, Anthony H. McDaniel, Kevin F. McCarty
Publikováno v:
The Journal of Physical Chemistry C. 114:19853-19861
Ambient pressure X-ray photoelectron spectroscopy (XPS) is used to measure near-surface oxidation states and local electric potentials of thin-film ceria electrodes operating in solid oxide electrochemical cells for H2O electrolysis and H2 oxidation.
Autor:
Zhi Liu, Zahid Hussain, Mark Linne, Anthony H. McDaniel, Roger L. Farrow, Kevin F. McCarty, Chunjuan Zhang, Bryan W. Eichhorn, Hendrik Bluhm, Farid El Gabaly, E. Akhadov, Gregory S. Jackson, Michael E. Grass, Steven C. DeCaluwe
Publikováno v:
ECS Transactions. 25:335-343
Single chamber electrochemical cells were fabricated by patterning working and counter electrodes of Ni and Pt on single-crystal Y2O3-stabilized ZrO2. Cells were characterized in mixed atmospheres of H2 and H2O at ratios of 1:1 and 1:20 at nominally
Autor:
Gregory S. Jackson, Roger L. Farrow, Zhi Liu, Kevin F. McCarty, John T. Newberg, Zahid Hussain, Anthony H. McDaniel, Shu Nie, Steven C. DeCaluwe, Mark Linne, Farid El Gabaly, Hendrik Bluhm
Publikováno v:
ECS Transactions. 16:253-263
Ceria is being considered as an electrocatalyst component for fuel-flexible SOFC anodes. With Ce3+ and Ce4+ oxidation states, ceria can function as a mixed ionic-electronic conductor, transporting both O2- ions and electrons. It remains unclear what
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 15:153-158
The irradiances or fluences encountered in pulsed fiber lasers and amplifiers are sometimes high enough to destroy the fiber. The ultimate limit is set by the intrinsic damage threshold irradiance of doped silica. Other nonlinear processes such as se
Autor:
I-Ning Hu, Cheng Zhu, Roger L. Farrow, Michael Haines, Timothy S. McComb, Almantas Galvanauskas, Geoff Fanning
Publikováno v:
CLEO: 2015.
Study of nonlinear, intensity-dependent polarization evolution in 55μm core polygonal-CCC fibers reveals that both nonlinear polarization switching as well as robust and intensity-independent polarization maintenance can be achieved depending on inp
Autor:
J. Joshua Driscoll, Paul E. Schrader, R. Peter Lindstedt, K.-A. Rizos, Roger L. Farrow, Volker Sick
Publikováno v:
Zeitschrift für Physikalische Chemie. 219:679-698
We have applied time-resolved picosecond linear laser-induced fluorescence to obtain spatially resolved profiles of NO in laminar methane/air and methane/nitric oxide/air counterflow diffusion flames at atmospheric pressure. Temperature profiles have
Autor:
Andreas Dreizler, Paul E. Schrader, Thomas B. Settersten, Roger L. Farrow, Brian D. Patterson
Publikováno v:
Applied Physics B: Lasers and Optics. 76:479-482
This study reports on photochemical interferences affecting atomic oxygen detection using two-photon laser-induced fluorescence at 226 nm. In contrast to previous studies in which molecular oxygen was proven to be the relevant photochemical precursor
Autor:
Campbell D. Carter, James R. Gord, Keith D. Grinstead, Paul M. Danehy, Viswanathan Velur-Natarajan, Gregory J. Fiechtner, Roger L. Farrow, Robert P. Lucht
Publikováno v:
AIAA Journal. 41:679-686
Measurements of temperature and CO2 concentration using dual-pump coherent anti-Stokes Raman scattering, (CARS) are described. The measurements were performed in laboratory flames,in a room-temperature gas cell, and on an engine test stand at the U.S
Publikováno v:
Chemical Physics Letters. 370:204-210
Two-color polarization spectroscopy (TC-PS) and two-color resonant four-wave mixing spectroscopy (TC-RFWM) are used to detect photolytically produced CH3 radicals. An infrared laser pumps individual lines in the ν3 fundamental of the X 2 A 2 ″ sta