Results 31 to 40 of about 21,556 (239)

Orbital Angular Momentum-based Space Division Multiplexing for High-capacity Underwater Optical Communications [PDF]

, 2016
To increase system capacity of underwater optical communications, we employ the spatial domain to simultaneously transmit multiple orthogonal spatial beams, each carrying an independent data channel.
Ahmed, Nisar, Arbabi, Amir, Arbabi, Ehsan, Ashrafi, Solyman, Cao, Yinwen, Faraon, Andrei, Kamali, Seyedeh Mahsa, Li, Long, Liu, Cong, Ren, Yongxiong, Tur, Moshe, Wang, Zhe, Willner, Alan E., Willner, Asher J., Xie, Guodong, Yan, Yan, Zhao, Zhe   +16 more
core   +4 more sources

A white-light trap for Bose-Einstein condensates

, 2003
We propose a novel method for trapping Bose-condensed atoms using a white-light interference fringe. Confinement frequencies of tens of kHz can be achieved in conjunction with trap depths of only a few micro-K.
, B Deissler, Boesten H M J M, Born M, Born M, Born M, Burt E A, C A Sackett, Cochran R L, Cornish S L, Jaksch D, Kolomeisky E B Kalas R M Straley J P, McKenzie C, Miller J D, Miller T M, Mølmer K, O?Hara K M, Orzel C, Reymond G, Savard T A   +19 more
core   +2 more sources

Technical advantages for weak value amplification: When less is more [PDF]

, 2013
The technical merits of weak value amplification techniques are analyzed. We consider models of several different types of technical noise in an optical context and show that weak value amplification techniques (which only use a small fraction of the ...
Howell, John C., Jordan, Andrew N., Martínez-Rincón, Julián   +2 more
core   +4 more sources

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

The 74MHz System on the Very Large Array

, 2007
The Naval Research Laboratory and the National Radio Astronomy Observatory completed implementation of a low frequency capability on the VLA at 73.8 MHz in 1998.
A. S. Cohen, B. Hicks, Baars J. W. M., Braude S. Ya., Brentjens M. A., Cornwell T. J., D. Katz, Duim R. M., E. W. Greisen, Erickson W. C., Falcke H., H. R. Schmitt, Jacobson A. R., Jagers W. J., Jagers W. J., Jones L. R., Kassim N. E., Kronberg P. P., Kuhr H., Leahy J. P., Leahy J. P., Leahy J. P., McCready L. L., N. E. Kassim, Napier P. J., Pawsey J. L., Pedlar A., R. A. Perley, Rees N., Roger R. S., Ryle M., Ryle M., Ryle M., Shkolvsky I. S., Slee O. B., Slee O. B., Slee O. B., Subramanian K. R., Swarup G., T. Joseph W. Lazio, Taylor G. B., Thomasson P., W. C. Erickson, W. D. Cotton, Yates K. W.   +44 more
core   +1 more source

Scaling Limits for Beam Wave Propagation in Atmospheric Turbulence [PDF]

, 2003
We prove the convergence of the solutions of the parabolic wave equation to that of the Gaussian white-noise model widely used in the physical literature.
Fannjiang, Albert, Solna, Knut
core   +1 more source

Beam wandering of femtosecond laser filament in air

Optics Express, 2015
The spatial wandering of a femtosecond laser filament caused by the filament heating effect in air has been studied. An empirical formula has also been derived from the classical Karman turbulence model, which determines quantitatively the displacement of the beam center as a function of the propagation distance and the effective turbulence structure ...
Jing, Yang, Tao, Zeng, Lie, Lin, Weiwei, Liu   +3 more
openaire   +2 more sources

Surface Diffusion in SnTe‐PbTe Monolayer Lateral Heterostructures

Advanced Functional Materials, EarlyView.
The lateral heterostructures between 2D materials often suffer from the interdiffusion at the interfaces. Here, a surface diffusion mechanism is found to be dominating at the interfaces between semiconducting SnTe and PbTe monolayers. Atomically sharp interfaces can be achieved by suppressing this diffusion process. ABSTRACT The construction of complex
Jing‐Rong Ji, Zi'Ang Gao, Shiva Prasad Poudel, Rui‐Qi Cao, Tianzhe Chen, Luxin Li, Chong Liu, Salvador Barraza‐Lopez, Stuart S. P. Parkin, Kai Chang   +9 more
wiley   +1 more source

High range free space optic transmission using new dual diffuser modulation technique

EPJ Web of Conferences, 2017
Free space optical communication fsoc is vulnerable with fluctuating atmospheric. This paper focus analyzes the finding of new technique dual diffuser modulation (ddm) to mitigate the atmospheric turbulence effect.
Rahman A.K, Julai N, Jusoh M, Rashidi C.B.M., Aljunid S.A, Anuar M.S, Talib M.F, Zamhari Nurdiani, Sahari S.k, Tamrin K.F., Jong Rudiyanto P., Zaidel D.N.A, Mohtadzar N.A.A, Sharip M.R.M, Samat Y.S   +14 more
doaj   +1 more source

Beam Test of a Segmented Foil SEM Grid

, 2005
A prototype Secondary-electron Emission Monitor (SEM) was installed in the 8 GeV proton transport line for the MiniBooNE experiment at Fermilab. The SEM is a segmented grid made with 5 um Ti foils, intended for use in the 120 GeV NuMI beam at Fermilab ...
Agoritsas, Anne, Blankenburg, Blankenburg, Bruining, C. Kendziora, C. Moore, D. Indurthy, G. Tassotto, Garwin, Isabelle, M. Proga, Planskoy, R. Ford, R. Zwaska, S. Childress, S.E. Kopp, Sternglass, T. Kobilarcik, Taimuty, Tautfest, Z. Pavlovich, Zwaska   +22 more
core   +1 more source