Search Results - "Putnam, William P"

Optical-field-controlled photoemission from plasmonic nanoparticles by Putnam, William P., Hobbs, Richard G., Keathley, Phillip D., Berggren, Karl K., Kärtner, Franz X.

“…Photoemission is usually driven by the energy of the illuminating laser pulses, but in the strong-field regime, the photoemission from an array of plasmonic…”
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Light phase detection with on-chip petahertz electronic networks by Yang, Yujia, Turchetti, Marco, Vasireddy, Praful, Putnam, William P., Karnbach, Oliver, Nardi, Alberto, Kärtner, Franz X., Berggren, Karl K., Keathley, Phillip D.

“…Ultrafast, high-intensity light-matter interactions lead to optical-field-driven photocurrents with an attosecond-level temporal response. These photocurrents…”
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Radially polarized Bessel-Gauss beams: decentered Gaussian beam analysis and experimental verification by Schimpf, Damian N, Putnam, William P, Grogan, Michael D W, Ramachandran, Siddharth, Kärtner, Franz X

“…We derive solutions for radially polarized Bessel-Gauss beams in free-space by superimposing decentered Gaussian beams with differing polarization states. We…”
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Subwavelength-modulated silicon photonics for low-energy free-electron-photon interactions by Ates, Omer Emre, Slayton, Benjamin J., Putnam, William P.

“…We investigate silicon waveguides with subwavelength-scale modulation for applications in free-electron-photon interactions. The modulation enables velocity…”
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Strong-field photoemission from silicon field emitter arrays by Keathley, Phillip D., Sell, Alexander, Putnam, William P., Guerrera, Stephen, Velásquez-García, Luis, Kärtner, Franz X.

“…Strong‐field photoemission from silicon field emitter arrays is investigated experimentally and results are explained using a “simple‐man” optical‐field…”
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Antiresonant-like behavior in carrier-envelope-phase-sensitive sub-optical-cycle photoemission from plasmonic nanoantennas by Keathley, Phillip D., Putnam, William P., Hobbs, Richard G., Berggren, Karl K., Kartner, Franz X.

“…We study carrier-envelope-phase-sensitive (CEP-sensitive) photoemission from plasmonic nanoantennas excited with laser pulses of varying incident optical…”
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On-chip sampling of optical fields with attosecond resolution by Bionta, Mina R., Ritzkowsky, Felix, Turchetti, Marco, Yang, Yujia, Cattozzo Mor, Dario, Putnam, William P., Kärtner, Franz X., Berggren, Karl K., Keathley, Phillip D.

“…We demonstrate an on-chip, optoelectronic device capable of sampling arbitrary, low-energy, near-infrared waveforms under ambient conditions with…”
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Mapping Photoemission and Hot-Electron Emission from Plasmonic Nanoantennas by Hobbs, Richard G, Putnam, William P, Fallahi, Arya, Yang, Yujia, Kärtner, Franz X, Berggren, Karl K

“…Understanding plasmon-mediated electron emission and energy transfer on the nanometer length scale is critical to controlling light–matter interactions at…”
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Generalizing higher-order Bessel-Gauss beams: analytical description and demonstration by Schimpf, Damian N, Schulte, Jan, Putnam, William P, Kärtner, Franz X

“…We report on a novel class of higher-order Bessel-Gauss beams in which the well-known Bessel-Gauss beam is the fundamental mode and the azimuthally symmetric…”
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Publisher Correction: On-chip sampling of optical fields with attosecond resolution by Bionta, Mina R., Ritzkowsky, Felix, Turchetti, Marco, Yang, Yujia, Cattozzo Mor, Dario, Putnam, William P., Kärtner, Franz X., Berggren, Karl K., Keathley, Phillip D.

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Bessel-Gauss beam enhancement cavities for high-intensity applications by Putnam, William P, Schimpf, Damian N, Abram, Gilberto, Kärtner, Franz X

“…We introduce Bessel-Gauss beam enhancement cavities that may circumvent the major obstacles to more efficient cavity-enhanced high-field physics such as…”
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Subwavelength-Structured Waveguides for Free-Electron-Photon Interactions by Ates, Omer Emre, Slayton, Benjamin J., Putnam, William P.

“…The interaction between free electrons and photons in electron microscopes offers unique opportunities for microscopy and quantum science. For example,…”
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Micron-Scale Electrostatic Charged-Particle Guides: Analysis and Simulation by Slayton, Benjamin J., Kim, Ryan S., Putnam, William P.

“…We study charged-particle guiding structures based on periodic arrangements of microfabricated electrostatic lenses. Specifically, we analyze such…”
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Electrostatic Charged-Particle Guides for µm-Scale Beam-Wave Interactions by Slayton, Benjamin J., Kim, Ryan S., Putnam, William P.

“…We present charged-particle guiding structures capable of confining energetic electron beams to micron-scale transverse dimensions on the surface of a chip…”
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Applications in Microscopy and Lithography for a Heralded Electron Source by Koppell, Stewart A., Simonaitis, John W., Krielaart, Maurice A.R., Ates, Omer E., Putnam, William P., Berggren, Karl K., Keathley, Phillip. D.

“…We describe the design for a heralded electron source made from a standard electron gun, a weak photonic coupler, an electron energy filter, and a single…”
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Electron-Photon Interactions in a Scanning Electron Microscope by Simonaitis, John W., Krielaart, Maurice A. R., Koppell, Stewart A., Slayton, Benjamin J., Alongi, Joseph, Putnam, William P., Berggren, Karl K., Keathley, Phillip D.

“…In this work, we describe a testbed for studying free-electron photon interactions in a 1 to 20-keV scanning electron microscope. The setup includes an…”
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Noninvasive electron microscopy with interaction-free quantum measurements by Putnam, William P., Yanik, Mehmet Fatih

“…We propose the use of interaction-free quantum measurements with electrons to eliminate sample damage in electron microscopy. This might allow noninvasive…”
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Subwavelength-Modulated Waveguides for Phase-matching Photons and Low-Energy Electrons by Ates, Omer Emre, Putnam, William P.

“…We investigate dielectric waveguides with subwavelength-scale modulation for applications in free-electron-photon interactions. We show that such waveguides…”
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Time-Domain Analysis of the Coupling Between Free-Electrons and Photonic Waveguides by Ates, Omer Emre, Slayton, Benjamin J., Putnam, William P.

“…We investigate how free-electrons can excite modes in nearby photonic waveguides. Using particle-in-cell simulations, we explore how a free-electron packet can…”
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Pulse Measurement of Second-Harmonic Generation from Random Quasi-Phase-Matching in ZnS by Glick, Noah, Li, Tianyou, Vasilyev, Sergey, Putnam, William P.

“…We use 2.4-micron laser pulses to produce second-harmonic generation via random quasi-phase-matching in ZnS. Using a frequency-resolved optical gating system,…”
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