Lawrence M. Earley

Final klystron modulator design, testing, and installation plan for the Los Alamos Neutron Science Center accelerator

William A. Reass, J. M. Audia, David M. Baca, Anthony J. Balmes et autres

This paper describes the production design, initial testing, and the installation plan of the 44 totem-pole pair, triode based klystron modulator systems that will be installed on the Los Alamos Neutron Science Center (LANSCE) accelerator RF system. The existing modulators were designed …

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Breaking the universal speed limit: Emission of radiation by superluminal sources

John Singleton, Andrea Schmidt, Frank L. Krawczyk, J. Wigger et autres

Abstract Not Provided

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Tunnel-diode loaded split-ring resonators as a foundation for nonlinear metamaterials

John F. O’Hara, Matthew T. Reiten, Patrick L. Colestock, Lawrence M. Earley et autres

The nonlinear electromagnetic response is one of the foundations of modern technology and it arises in natural materials at the atomic scale. We briefly present some of the fundamentals of nonlinearity in natural materials and then we present experimental studies of analogous …

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Sol–Gel Processing and Characterizations of a Ba 0.75 Sr 0.25 Ti 0.95 Zr 0.05 O 3 Ceramic

Ching‐Fong Chen, D. Reagor, Steven Russell, Quinn R. Marksteiner et autres

A Ba 0.75 Sr 0.25 Ti 0.95 Zr 0.05 O 3 ceramic was developed for use in nonlinear transmission line (NLTL) applications. The sol–gel process was used to synthesize Ba 0.75 Sr 0.25 Ti 0.95 Zr 0.05 O 3 nanoparticles to achieve …

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Progress on a 94 GHz omniguide traveling-wave tube gain experiment

Dmitry Yu. Shchegolkov, Dale A. Dalmas, Lawrence M. Earley, William B. Haynes et autres

Compact, efficient, high-bandwidth and high-power mm-wave sources are essential for many applications in secure communications, environmental monitoring, imaging, spectroscopy for remote sensing in nonproliferation, and basic research such as radio astronomy. Commercial microwave tube amplifiers are available at frequencies up to only …

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Progress on the Omniguide Traveling-Wave Tube Experiment

Evgenya Simakov, Dale A. Dalmas, Lawrence M. Earley, William B. Haynes et autres

First experimental demonstration of a photonic band gap channel-drop filter at 240 GHz

Evgenya Simakov, Lawrence M. Earley, C.E. Heath, Dmitry Yu. Shchegolkov et autres

We have designed, fabricated, and tested a novel photonic band gap (PBG) channel-drop filter (CDF) operating at around 240 GHz. A PBG CDF is a device that allows the channeling of selected frequencies from continuous spectra into separate waveguides through select defects …

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Sol-Gel Processing and Characterization of a Ba0.75Sr0.25Ti0.95Zr0.05O3 Ceramics.

Pin Yang, Ching‐Fong Chen, D. Reagor, Quinn R. Marksteiner et autres

20.2: Testing of the omniguide traveling-wave tube

Dmitry Yu. Shchegolkov, Lawrence M. Earley, William B. Haynes, Richard M. Renneke et autres

We have designed, fabricated and tested with low power a novel W-band TWT based on a slow-wave cylindrically-symmetric PBG dielectric structure, or an “omniguide”. PBG TWT structures have great potential for very large bandwidth and linear dispersion. A gain experiment is under …

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Design and testing of photonic band gap channel-drop-filters

Dmitry Yu. Shchegolkov, Lawrence M. Earley, C.E. Heath, Evgenya I. Smirnova

We have designed, fabricated and tested several novel passive mm-wave spectrometers based on photonic band gap (PBG) structures. Our spectrometers were designed to operate in the frequency ranges of 90-130 and 220-300 GHz. We built and tested both metallic and dielectric silicon …

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Omniguide traveling-wave tube structure testing with a 120 KEV electron beam

Evgenya I. Smirnova, Lawrence M. Earley, William B. Haynes, Richard M. Renneke et autres

Compact, efficient, high-bandwidth and high-power mm-wave sources are essential for many applications in secure communications, environmental monitoring, imaging, spectroscopy for remote sensing in nonproliferation, and basic research such as radio astronomy. Commercial microwave tube amplifiers are available at frequencies up to only …

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Design and fabrication of a 100 GHz channel-drop filter

Evgenya I. Smirnova, Lawrence M. Earley, C.E. Heath, Dmitry Yu. Shchegolkov

We have designed and are fabricating a novel passive mm-wave spectrometer based on a Photonic Band Gap (PBG) channel-drop filter (CDF). There is a need for a compact, wide-band, versatile and configurable mm-wave spectrometer for applications in mm-wave communications, radio astronomy, and …

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