Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Tim LaFave"'
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Terahertz near-field microspectroscopy is emerging as an essential tool for characterization of novel materials and biomolecules. It is important to ensure the near field geometry used does not introduce spectral artifacts. For example, many scanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea59c3f1b9952cc6ef5be83e36113af3
https://doi.org/10.1109/irmmw-thz46771.2020.9370923
https://doi.org/10.1109/irmmw-thz46771.2020.9370923
Publikováno v:
ISMVL
A recently developed four-port directional coupler used in optical signal processing applications is shown to be equivalent to a radix-4 Chrestenson operator, or gate, in quantum information processing (QIP) applications. The radix-4 qudit is impleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b63167d1776c2067059090dac2803dc
https://doi.org/10.1109/ismvl.2018.00052
https://doi.org/10.1109/ismvl.2018.00052
Publikováno v:
ECOC
The ability to separate multiplexed optical modes is assessed for three orthogonal basis sets. The results herein may assist in mode family selection for spatial division multiplexed communication systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9d971b739ac418383c64013ff4473a4
https://doi.org/10.1109/ecoc.2017.8345978
https://doi.org/10.1109/ecoc.2017.8345978
Publikováno v:
Optical Design and Fabrication 2017 (Freeform, IODC, OFT).
A holey terahertz vortex dielectric waveguide was designed and fabricated to transmit a THz vortex beam generated by a stepped spiral phase plate. Phase information of the transmitted beam was tested using a second phase plate.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b119492b1e0d2d3de6486173f086c202
https://doi.org/10.1364/oft.2017.om3b.3
https://doi.org/10.1364/oft.2017.om3b.3
Autor:
Tim LaFave, Duncan L. MacFarlane, Haohan Yao, Thethnin Ei, Rashaunda Henderson, Nima Ashrafi, Solyman Ashrafi, Harini Kumar
Publikováno v:
RWS
This paper demonstrates the design, fabrication and characterization of a physical phaseplate, which transforms plane waves to Hermite-Gaussian mode beams. The phaseplate is designed for a HG11 mode, working at E-band from 71 to 76 GHz. Simulations w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45fd34edf7cb10df97bddcf5709dbe8b
https://doi.org/10.1109/rws.2016.7444413
https://doi.org/10.1109/rws.2016.7444413
Autor:
Viswanath Ramakrishna, N. Sultana, Mieczyslaw K. Dabkowski, Amr El Nagdi, M. P. Christensen, T. W. Kim, N. Huntoon, Jiyoung Kim, J. Kirk, Tim LaFave, Ke Liu, Louis R. Hunt, G. A. Evans, Duncan L. MacFarlane
Publikováno v:
IEEE Journal of Quantum Electronics. 48:307-317
The role of gain in an optical filter is advanced by good agreement between theory and experiment presented herein. The particular integrated photonic filter is composed of four semiconductor optical amplifiers and one four-port coupler located at th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dc501069f6b5ead2c59e54831d60fc9
https://doi.org/10.1109/jqe.2011.2174615
https://doi.org/10.1109/jqe.2011.2174615
Autor:
Amr El Nagdi, Mieczyslaw K. Dabkowski, Tim LaFave, Viswanath Ramakrishna, Ke Liu, Billye Cheek, Louis R. Hunt, Duncan L. MacFarlane
Publikováno v:
Acta Applicandae Mathematicae. 118:107-123
In this work, we consider design questions for an active optical lattice filter, which is being manufactured at the University of Texas at Dallas, and which has proven to be useful in the signal processing task of RF channelization. The filter can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8904870e982d1ab4ae2c932448dc3b7b
https://doi.org/10.1007/s10440-012-9680-8
https://doi.org/10.1007/s10440-012-9680-8
Autor:
Tim LaFave
Publikováno v:
Journal of Electrostatics. 69:414-418
Studies on nanoscale materials merit careful development of an electrostatics model concerning discrete point charges within dielectrics. The discrete charge dielectric model treats three unique interaction types derived from an external source: Coul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9437990699da5b976292706ef8fd0254
https://doi.org/10.1016/j.elstat.2011.06.006
https://doi.org/10.1016/j.elstat.2011.06.006
Autor:
Mieczyslaw K. Dabkowski, Louis R. Hunt, Tim LaFave, Duncan L. MacFarlane, Marc P. Christensen, Ke Liu, Viswanath Ramakrishna, Amr El Nagdi
Publikováno v:
Sensors, Vol 11, Iss 2, Pp 1297-1320 (2011)
Sensors
Volume 11
Issue 2
Pages 1297-1320
Sensors (Basel, Switzerland)
Sensors
Volume 11
Issue 2
Pages 1297-1320
Sensors (Basel, Switzerland)
A theoretical study of RF-photonic channelizers using four architectures formed by active integrated filters with tunable gains is presented. The integrated filters are enabled by two- and four-port nano-photonic couplers (NPCs). Lossless and three i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9fc1b3d98e063593f8c94529dbd09fb
https://doi.org/10.3390/s110201297
https://doi.org/10.3390/s110201297
Autor:
Tim LaFave, Raphael Tsu
Publikováno v:
Microelectronics Journal. 40:791-795
Due to the discreteness of electronic charges in a nanoscale system, capacitance is defined in terms of the total interaction energy of N-electrons confined in a dielectric sphere. Specifically, the distribution of N-electrons is obtained from minimi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cdd4173954b72223fccc2638ca227ed
https://doi.org/10.1016/j.mejo.2008.11.035
https://doi.org/10.1016/j.mejo.2008.11.035