369 citations · 1k across the 18 of their papers we have counts for
19 papers
Quantum Nanophotonics with Energetic Particles:X-rays and Free Electrons
Xihang Shi, Wen Wei Lee, Aviv Karnieli +7
Rapid progress in precision nanofabrication and atomic design over the past 50 years has ushered in a succession of transformative eras for molding the generation and flow of light…
Propagation-induced limits to high harmonic generation in 3D Dirac semimetals
Jeremy Lim, Yee Sin Ang, Lay Kee Ang +1
3D Dirac semimetals (DSMs) are promising materials for terahertz high harmonic generation (HHG). We show that 3D DSMs' high nonlinearity opens up a regime of nonlinear optics where…
Highly efficient terahertz generation using 3D Dirac semimetals
Lu Wang, Jeremy Lim, Liang Jie Wong
We show that 3D Dirac semimetals are promising candidates for highly efficient optical-to-terahertz conversion due to their extreme optical nonlinearities. In particular, we predic…
Monochromatic X-ray source based on scattering from a magnetic nanoundulator
Sophie Fisher, Charles Roques-Carmes, Nicholas Rivera +3
We present a novel design for an ultra-compact, passive light source capable of generating ultraviolet and X-ray radiation, based on the interaction of free electrons with the magn…
Abruptly Focusing and Defocusing Needles of Light and Closed-Form Electromagnetic Wavepackets
Liang Jie Wong, Ido Kaminer
Fourier optics enforces a tradeoff between length and narrowness in electromagnetic wavepackets, so that a narrow spatial focus diffracts at a large divergence angle, and only infi…
Ultrashort Tilted-Pulse-Front Pulses and Nonparaxial Tilted-Phase-Front Beams
Liang Jie Wong, Ido Kaminer
Electromagnetic pulses with tilted pulse fronts are instrumental in enhancing the efficiency of many light-matter interaction processes, with prominent examples including terahertz…
Asymptotic Precision Corrections to Radiation Reaction
Yarden Sheffer, Yaron Hadad, Morgan H. Lynch +2
The radiative correction to the equation of motion for a moving charged particle is one of the oldest open problems in physics. The problem originates in the emission of radiation…
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches
J. Lim, Y. D. Chong, L. J. Wong
Ultrashort electron bunches are useful for applications like ultrafast imaging and coherent radiation production. Currently, however, the shortest achievable bunches, at attosecond…
Controlling light emission with electron wave interference
Chitraang Murdia, Nicholas Rivera, Thomas Christensen +4
It is a long standing question whether or not one can change the nature of spontaneous emission by a free electron through shaping the electron wavefunction. On one hand, shaping t…
Laser-Induced Linear Electron Acceleration in Free Space
Liang Jie Wong, Kyung-Han Hong, Sergio Carbajo +5
Linear acceleration in free space is a topic that has been studied for over 20 years, and its ability to eventually produce high-quality, high energy multi-particle bunches has rem…
Quantum Čerenkov Effect from Hot Carriers in Graphene: An Efficient Plasmonic Source
I. Kaminer, Y. Tenenbaum Katan, H. Buljan +6
Graphene plasmons (GPs) have been found to be an exciting plasmonic platform, thanks to their high field confinement and low phase velocity, motivating contemporary research to rev…
Direct laser acceleration of electrons in free-space
Sergio Carbajo, Emilio A. Nanni, Liang Jie Wong +2
Compact laser-driven accelerators are versatile and powerful tools of unarguable relevance on societal grounds for the diverse purposes of science, health, security, and technology…
Toward a terahertz-driven electron gun
W. Ronny Huang, Emilio A. Nanni, Koustuban Ravi +6
Femtosecond electron bunches with keV energies and eV energy spread are needed by condensed matter physicists to resolve state transitions in carbon nanotubes, molecular structures…
All-optical three-dimensional electron pulse compression
Liang Jie Wong, Byron Freelon, Timm Rohwer +2
We propose an all-optical, three-dimensional electron pulse compression scheme in which Hermite-Gaussian optical modes are used to fashion a three-dimensional optical trap in the e…
A Threshold for Laser-Driven Linear Particle Acceleration in Unbounded Vacuum
Liang Jie Wong, Franz X. Kärtner
We hypothesize that a charged particle in unbounded vacuum can be substantially accelerated by a force linear in the electric field of a propagating electromagnetic wave only if th…
Direct acceleration of an electron in infinite vacuum by a pulsed radially-polarized laser beam
Liang Jie Wong, Franz X. Kärtner
We study the direct acceleration of a free electron in infinite vacuum along the axis of a pulsed radially-polarized laser beam. We find that net energy transfer from laser pulse t…
Two-Color-Laser-Driven Direct Electron Acceleration in Infinite Vacuum
Liang Jie Wong, Franz X. Kärtner
We propose a direct electron acceleration scheme that uses a two-color pulsed radially-polarized laser beam. The two-color scheme achieves electron acceleration exceeding 90% of th…
Compact electron acceleration and bunch compression in THz waveguides
Liang Jie Wong, Arya Fallahi, Franz X. Kärtner
We numerically investigate the acceleration and bunch compression capabilities of 20 mJ, 0.6 THz-centered coherent terahertz pulses in optimized metallic dielectric-loaded cylindri…
An improved beam waist formula for ultrashort, tightly-focused linearly, radially, and azimuthally polarized laser pulses in free space
Liang Jie Wong, Franz X. Kärtner, Steven G. Johnson
We derive an asymptotically accurate formula for the beam waist of ultrashort, tightly-focused fundamental linearly-polarized, radially-polarized, and azimuthally-polarized modes i…