A5015915823- Terahertz technology and applications
- Gyrotron and Vacuum Electronics Research
- Superconducting and THz Device Technology
- Laser-Matter Interactions and Applications
- Photonic and Optical Devices
- Advanced Electron Microscopy Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Semiconductor Quantum Structures and Devices
- Magnetic properties of thin films
- Advanced Chemical Physics Studies
- Electron Spin Resonance Studies
- Superconducting Materials and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- NMR spectroscopy and applications
- Particle Detector Development and Performance
SLAC National Accelerator Laboratory
2020-2024
Stanford University
2020-2024
University of California, Santa Cruz
2022
Case Western Reserve University
2019
We present an experimental demonstration of ultrafast electron diffraction (UED) with THz-driven bunch compression and time-stamping that enables UED probes improved temporal resolution. Through longitudinal compression, a factor approximately four is achieved. Moreover, the time-of-arrival jitter between compressed pump laser pulse suppressed by three. Simultaneously, THz interaction imparts transverse spatiotemporal correlation on distribution, which we utilize to further enhance precision...
Abstract C 3 is an opportunity to realize e + - collider for the study of Higgs boson at √ s = 250 GeV, with a well defined upgrade path 550 GeV while staying on same short facility footprint [2,3]. based fundamentally new approach normal conducting linear accelerators that achieves both high gradient and efficiency relatively low cost. Given advanced state designs, key system requires technical maturation main linac. This paper presents staged towards demonstrate technology Direct (source...
C$^3$ is an opportunity to realize e$^+$e$^-$ collider for the study of Higgs boson at $\sqrt{s} = 250$ GeV, with a well defined upgrade path 550 GeV while staying on same short facility footprint. based fundamentally new approach normal conducting linear accelerators that achieves both high gradient and efficiency relatively low cost. Given advanced state designs, key system requires technical maturation main linac. This white paper presents staged towards demonstrate technology Direct...
Visualizing ultrafast dynamics at the atomic scale requires time-resolved characterization with femtosecond temporal resolution. For fully relativistic electron bunch probes, existing techniques for single-shot diffraction (UED) are limited by achievable probe length, charge, and timing jitter. We present first experimental demonstration of dual-fed THz-driven compression time-stamping that enables probes improved This technique utilizes two counter-propagating quasi-single-cycle THz pulses...
Visualizing ultrafast dynamics at the atomic scale requires time-resolved pump-probe characterization with femtosecond temporal resolution. For single-shot electron diffraction (UED) fully relativistic bunch probes, existing techniques are limited by achievable probe length, charge, and timing jitter. We present first experimental demonstration of UED THz-driven compression time-stamping that enable probes unprecedented This technique utilizes two counter-propagating quasi-single-cycle THz...
We present results of a THz-driven dual-fed electron bunch compression experiment. have used two counter-propagating single-cycle THz pulses, generated by optical rectification in the nonlinear organic crystal OH1, to feed tapered parallel-plate waveguide compressor structure. report measurement sub 40 fs rms bunches, achieving factor 4 and jitter reduction 3.6. This approach will open new frontiers toward revealing dynamical behavior with unprecedented temporal resolution exotic materials using UED.
We demonstrate a technique for robust spatial and temporal characterization of single cycle strong field Terahertz pulses in the near-field LiNbO 3 source using electro-optic sampling.
Terahertz generation by optical rectification in LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> is a promising technique for generating intense THz radiation particle acceleration and beam manipulation. A better understanding of the near-field properties necessary optimization efficiency, transport, coupling. We demonstrate spatial temporal characterization single cycle strong field pulses source using electro-optic sampling....
A better understanding of the THz near-field properties is necessary for optimization generation efficiency, transport, and coupling. We demonstrate a fast efficient technique spatial temporal characterization single cycle strong field pulses in LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> source using electro-optic sampling. In this an enlarged probe beam CCD camera are used to image entire one shot. Using technique, we have...
Terahertz generation by optical rectification in LiNbO 3 using the tilted pulse front method is a powerful technique that routinely used to generate THz pulses with energies tens of micro-joules and field strengths above 1 MV/cm. THz-frequency accelerating structures utilize these fields could provide gradients needed for next particle accelerators compact, GV/m-scale devices. However, accelerator applications are limited significant losses during transport radiation from generating...
We show a method for detection and correction of the time-of-arrival jitter electron bunches generated from an rf photoeinjector through Terahertz time-stamping, subsequently improving temporal resolution pump-probe UED measurements.
We demonstrate a preliminary measurement of THz streaking ultrafast electron bunches generated from an rf photoeinjector using efficient deflector structure. show that the structure can achieve upward 1.5 MV/cm peak deflecting fields subsequently improving timing resolution diffraction measurements.