75 citations · 311 across the 17 of their papers we have counts for
17 papers
A Particle-In-Cell Code Comparison for Ion Acceleration: EPOCH, LSP, and WarpX
Joseph R. Smith, Chris Orban, Nashad Rahman +3
There are now more Particle-in-Cell (PIC) codes than ever before that researchers use to simulate intense laser-plasma interactions. To date, there have been relatively few direct…
Generation of even and odd high harmonics in resonant metasurfaces using single and multiple ultra-intense laser pulses
Maxim R. Shcherbakov, Haizhong Zhang, Michael Tripepi +9
High harmonic generation (HHG) opens a window on the fundamental science of strong-field light-mater interaction and serves as a key building block for attosecond optics and metrol…
Optimizing Laser-Plasma Interactions for Ion Acceleration using Particle-in-Cell Simulations and Evolutionary Algorithms
Joseph R. Smith, Chris Orban, John T. Morrison +4
The development of ultra-intense laser-based sources of high energy ions is an important goal, with a variety of potential applications. One of the barriers to achieving this goal…
Experimental observation and computational modeling of radial Weibel instability in high intensity laser-plasma interactions
Gregory K. Ngirmang, John T. Morrison, Kevin M. George +5
When a relativistic intensity laser interacts with the surface of a solid density target, suprathermal electron currents are subject to Weibel instability filamentation when propag…
Single-Shot Multi-Stage Damage and Ablation of Silicon by Femtosecond Mid-infrared Laser Pulses
Kevin Werner, Vitaly Gruzdev, Noah Talisa +4
Although ultrafast laser materials processing has advanced at a breakneck pace over the last two decades, most applications have been developed with laser pulses at near-IR or visi…
Tunable tunnel barriers in a semiconductor via ionization of individual atoms
Sara M. Mueller, Dongjoon Kim, Stephen R. McMillan +10
We report scanning tunneling microscopy studies of individual adatoms deposited on an InSb(110) surface. The adatoms can be reproducibly dropped off from the STM tip by voltage pul…
Particle-in-Cell Simulations of Density Peak Formation and Ion Acceleration from Short Pulse Laser-Driven Ponderomotive Steepening
Joseph R. Smith, Chris Orban, Gregory K. Ngirmang +4
We use particle-in-cell (PIC) simulations and simple analytic models to investigate the laser-plasma interaction known as ponderomotive steepening. When normally incident laser lig…
Nonlinear manifestations of photon acceleration in time-dependent metasurfaces: tunable broadband harmonics generation
Maxim R. Shcherbakov, Kevin Werner, Zhiyuan Fan +3
Time-dependent nonlinear media, such as rapidly generated plasmas produced via laser ionization of gases, can increase the energy of individual laser photons and generate tunable h…
Particle-in-Cell Simulations of Electron Beam Production from Infrared Ultra-intense Laser Interactions
Gregory K. Ngirmang, Chris Orban, Scott Feister +3
Advances in ultra-intense laser technology are enabling, for the first time, relativistic intensities at mid-infrared (mid-IR) wavelengths. Anticipating further experimental resear…
Direct Testing against Experiment of a Fundamental Ultrashort Pulse Laser Damage Simulation Technique with Utility for the Modeling of Nanostructure Formation
A. M. Russell, K. R. P. Kafka, D. W. Schumacher +1
We have developed the first laser damage simulation algorithm capable of determining crater and surface modification morphology from microscopic physics. Rapid progress in the fiel…
High spatial frequency laser induced periodic surface structure formation in germanium by mid-IR femtosecond pulses
Drake. R. Austin, Kyle R. P. Kafka, Yu Hang Lai +7
Formation of high spatial frequency laser induced periodic surface structures (HSFL) in germanium by femtosecond mid-IR pulses with wavelengths between and $3.6 \; \mathrm{…
3D PIC simulations of electron beams created via reflection of intense laser light from a water target
Gregory K. Ngirmang, Chris Orban, Scott Feister +4
We present 3D Particle-in-Cell (PIC) modeling of an ultra-intense laser experiment by the Extreme Light group at the Air Force Research Laboratory (AFRL) using the PIC code LSP. Th…
Relativistic electron acceleration by mJ-class kHz lasers normally incident on liquid targets
Scott Feister, Drake R. Austin, John T. Morrison +10
We report observation of kHz-pulsed-laser-accelerated electron energies up to 3 MeV in the - (backward) direction from a 3 mJ laser interacting at normal incidence…
Time-resolved measurement of single pulse femtosecond laser-induced periodic surface structure formation
K. R. P. Kafka, D. R. Austin, H. Li +3
Time-resolved diffraction microscopy technique has been used to observe the formation of laser-induced periodic surface structures (LIPSS) from the interaction of a single femtosec…
Modeling crater formation in femtosecond-pulse laser damage from basic principles
Robert A. Mitchell, Douglass W. Schumacher, Enam A. Chowdhury
We present the first fundamental simulation method for the determination of crater morphology due to femtosecond-pulse laser damage. To this end we have adapted the particle-in-cel…
Backward-propagating MeV electrons from W/cm laser interactions with water
John T. Morrison, Enam A. Chowdhury, Kyle D. Frische +6
We present an experimental study of the generation of MeV electrons opposite to the direction of laser propagation following the relativistic interaction at normal incidence…
Liquid crystal films as on-demand, variable thickness (50-5000 nm) targets for intense lasers
P. L. Poole, C. D. Andereck, D. W. Schumacher +6
We have developed a new type of target for intense laser-matter experiments that offers significant advantages over those currently in use. The targets consist of a liquid crystal…