176 citations · 895 across the 21 of their papers we have counts for
22 papers
The LCLS-II Photoinjector Laser Infrastructure
Hao Zhang, Sasha Gilevich, Alan Miahnahri +23
This paper presents a comprehensive technical overview of the Linac Coherent Light Source II (LCLS-II) photoinjector laser system, its first and foremost component. The LCLS-II pho…
Nonlinearly Shaped Pulses in Photoinjectors and Free-Electron Lasers
Nicole Neveu, Randy Lemons, Joseph Duris +4
Photoinjectors and Free Electron Lasers (FEL) are amongst the most advanced systems in accelerator physics and have consistently pushed the boundaries of emittance and x-ray peak p…
Fiber-Amplified Pulses Beyond the Gain Narrowing Limit for Seeding an OPA
Brittany Lu, Keith Wernsing, Sergio Carbajo
We report on the design and numerical simulation of a tunable, near-infrared (NIR) femtosecond noncollinear optical parametric amplifier (OPA) seeded by a nonlinear fiber amplifier…
Queered Science & Technology Center: Volume 1
Sergio Carbajo
Through the Fiat Lux seminar series at the University of California, Los Angeles, Volume 1 presents the first pedagogical and academic plans to destabilize hegemonic logics and hie…
Design, Optimization, and Blackbox Optimization of Laser Systems
Jack Hirschman, Randy Lemons, Minyang Wang +2
Chirped pulse amplification (CPA) and subsequent nonlinear optical (NLO) systems constitute the backbone of myriad advancements in semiconductor and additive manufacturing, communi…
Electron beam shaping via laser heater temporal shaping
D. Cesar, A. Anakru, S. Carbajo +6
Active longitudinal beam optics can help FEL facilities achieve cutting edge performance by optimizing the beam to: produce multi-color pulses, suppress caustics, or support attose…
Quantum mechanical study of the attosecond nonlinear Fourier transform spectroscopy of carbon dioxide
Sergy Grebenshchikov, Sergio Carbajo
Attosecond nonlinear Fourier transform (NFT) pump probe spectroscopy is an experimental technique which allows investigation of the electronic excitation, ionization, and unimolecu…
Temporal shaping of narrow-band picosecond pulses via non-colinear sum-frequency mixing of dispersion-controlled pulses
Randy Lemons, Nicole Neveu, Joseph Duris +3
A long sought-after goal for photocathode electron sources has been to improve performance by temporally shaping the incident exitation laser pulse. The narrow bandwidth, short wav…
Transient Work Function Gating: A New Photoemission Regime
Sergio Carbajo
We present the theoretical basis for a new photoemission regime, transient work function gating (TWFG), that temporally and energetically gates photoemission and produces near-thre…
Long-term Hybrid Stabilization of the Carrier-Envelope Phase
Jack Hirschman, Randy Lemons, Evan Chansky +2
Controlling the carrier envelope phase (CEP) in mode-locked lasers over practically long timescales is crucial for real-world applications in ultrafast optics and precision metrolo…
Reconstruction and Optimization of Coherent Synthesis by Fourier Optics Based Genetic Algorithm
Randy Lemons, Sergio Carbajo
We present a numerical method for the reconstruction and optimization of complex field synthesis using coherent pulse combination systems. A genetic algorithm utilizing a Fourier o…
Integrated Structured Light Architectures
Randy Lemons, Wei Liu, Josef C. Frisch +4
The structural versatility of light underpins an outstanding collection of optical phenomena where both geometrical and topological states of light can dictate how matter will resp…
Carrier-envelope phase stabilization of an Er:Yb:glass laser via feed-forward technique
Randy Lemons, Wei Liu, Irene Fernandez De Fuentes +4
Few-cycle pulsed laser technology highlights the need for control and stabilization of the carrier-envelope phase (CEP) for applications requiring shot-to-shot timing and phase con…
Three-dimensional view of ultrafast dynamics in photoexcited bacteriorhodopsin
Gabriela Nass Kovacs, Jacques-Philippe Colletier, Marie Grünbein +25
Bacteriorhodopsin (bR) is a light-driven proton pump. We use time-resolved crystallography at an X-ray free-electron laser to follow the structural changes in multiphoton-excited b…
Simulated XUV Photoelectron Spectra of THz-pumped Liquid Water
Caroline Arnold, Ludger Inhester, Sergio Carbajo +2
Highly intense, sub-picosecond terahertz (THz) pulses can be used to induce ultrafast temperature jumps (T-jumps) in liquid water. A supercritical state of gas-like water with liqu…
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…
Effective Path Towards Relativistic Transients at Millimeter Wavelengths
Sergio Carbajo, Anne-Laure Calendron, Huseyin Cankaya +6
We refine the method towards extraction of sub-cycle transients in the 0.1-1 THz frequency (mm-wavelength) range from optical rectification in lithium niobate using tilted pulse fr…
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…
Theory of THz generation by Optical Rectification using Tilted-Pulse-Fronts
Koustuban Ravi, Wenqian Ronny Huang, Sergio Carbajo +4
A model for THz generation by optical rectification using tilted-pulse-fronts is developed. It simultaneously accounts for (i) the spatio-temporal distortions of the optical pump p…
Compact x-ray source based on burst-mode inverse Compton scattering at 100 kHz
W. S. Graves, J. Bessuille, P. Brown +13
A design for a compact x-ray light source (CXLS) with flux and brilliance orders of magnitude beyond existing laboratory scale sources is presented. The source is based on inverse…
Terahertz Generation in Lithium Niobate Driven by Ti:Sapphire Laser Pulses and its Limitations
Xiaojun Wu, Sergio Carbajo, Koustuban Ravi +5
We experimentally investigate the limits to 800 nm-to-terahertz (THz) energy conversion in lithium niobate at room temperature driven by amplified Ti:Sapphire laser pulses with til…
Limitations to THz generation by optical rectification using tilted pulse fronts
Koustuban Ravi, Wenqian Ronny Huang, Sergio Carbajo +2
Terahertz (THz) generation by optical rectification (OR) using tilted-pulse-fronts is studied. One-dimensional (1-D) and 2-D spatial models, which simultaneously account for (i) th…