scholarly journals Generation of Strong-field Terahertz Pulses and its Application in Electron Acceleration

2017 ◽  
Author(s):  
Xiaojun Wu
Keyword(s):  
Strong Field ◽  
Electron Acceleration ◽  
Terahertz Pulses

scholarly journals Terahertz quantum plasmonics at nanoscales and angstrom scales

Nanophotonics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 435-451 ◽  
Author(s):  
Taehee Kang ◽  
Young-Mi Bahk ◽  
Dai-Sik Kim
Keyword(s):  
Electron Tunneling ◽  
Strong Field ◽  
Field Enhancement ◽  
Dipole Antenna ◽  
Strong Light ◽  
Metallic Structures ◽  
Terahertz Pulses ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Quantum Phenomena

AbstractThrough the manipulation of metallic structures, light–matter interaction can enter into the realm of quantum mechanics. For example, intense terahertz pulses illuminating a metallic nanotip can promote terahertz field–driven electron tunneling to generate enormous electron emission currents in a subpicosecond time scale. By decreasing the dimension of the metallic structures down to the nanoscale and angstrom scale, one can obtain a strong field enhancement of the incoming terahertz field to achieve atomic field strength of the order of V/nm, driving electrons in the metal into tunneling regime by overcoming the potential barrier. Therefore, designing and optimizing the metal structure for high field enhancement are an essential step for studying the quantum phenomena with terahertz light. In this review, we present several types of metallic structures that can enhance the coupling of incoming terahertz pulses with the metals, leading to a strong modification of the potential barriers by the terahertz electric fields. Extreme nonlinear responses are expected, providing opportunities for the terahertz light for the strong light–matter interaction. Starting from a brief review about the terahertz field enhancement on the metallic structures, a few examples including metallic tips, dipole antenna, and metal nanogaps are introduced for boosting the quantum phenomena. The emerging techniques to control the electron tunneling driven by the terahertz pulse have a direct impact on the ultrafast science and on the realization of next-generation quantum devices.

Strong-field plasmonic electron acceleration with few-cycle, phase-stabilized laser pulses

2011 ◽  
Vol 98 (11) ◽  
pp. 111116 ◽  
Author(s):  
P. Rácz ◽  
S. E. Irvine ◽  
M. Lenner ◽  
A. Mitrofanov ◽  
A. Baltuška ◽  
...  
Keyword(s):  
Strong Field ◽  
Laser Pulses ◽  
Electron Acceleration ◽  
Cycle Phase

Focusing Waveguide Structure for High-Gradient Electron Acceleration by Picosecond Terahertz Pulses

2021 ◽  
Vol 64 (3) ◽  
pp. 195-204
Author(s):  
S. B. Bodrov ◽  
A. A. Vikharev ◽  
S. V. Kuzikov ◽  
A. N. Stepanov ◽  
A. É. Fedotov
Keyword(s):  
Electron Acceleration ◽  
Waveguide Structure ◽  
High Gradient ◽  
Terahertz Pulses

scholarly journals Селективное возбуждение и создание инверсной населенности в квантовых системах с помощью униполярных аттосекундных и терагерцовых импульсов

2020 ◽  
Vol 128 (12) ◽  
pp. 1905
Author(s):  
Р.М. Архипов ◽  
М.В. Архипов ◽  
А.В. Пахомов ◽  
М.О. Жукова ◽  
А.Н. Цыпкин ◽  
...  
Keyword(s):  
Strong Field ◽  
Energy Levels ◽  
Weak Field ◽  
Quantum Systems ◽  
Spatial Profile ◽  
Terahertz Pulses ◽  
Selective Population ◽  
Dynamics Of Population ◽  
The Impact ◽  
Level Medium

The possibility of selective population of the energy levels of quantum systems was studied using a single unipolar subcycle pulse and a pair of pulses. Selective population of quantum levels is clearly illustrated based on the numerical solution of the system of equations for the density matrix of a three-level medium interacting with a pair of subcycle attosecond and terahertz pulses. The possibility of creating an population inversion in a three-level medium is shown using a pair of such pulses. The dynamics of population density gratings in a three-level medium is studied at the impact on the system of a pair of large-amplitude Gaussian pulses. If in a weak field the shape of the gratings is harmonic, according to analytical calculations performed according to perturbation theory, then in in the case of a strong field, the spatial profile of the gratings can differ from the sinusoidal one and has complex spike structure.

Simulation of the non-thermal effects of strong field terahertz pulses on tumor cells

2021 ◽  
Author(s):  
Zhenzhen Ge ◽  
Jun Zhou ◽  
Shuting Wu ◽  
Xin Rao ◽  
Jiajia Qian ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Thermal Effects ◽  
Strong Field ◽  
Terahertz Pulses

High-Energy Strong-Field Terahertz Pulses Based on Tilted-Pulse-Front Technique

2019 ◽  
Vol 46 (6) ◽  
pp. 0614008
Author(s):  
吴晓君 Xiaojun Wu ◽  
郭丰玮 Fengwei Guo ◽  
马景龙 Jinglong Ma ◽  
欧阳琛 Chen Ouyang ◽  
王天泽 Tianze Wang ◽  
...  
Keyword(s):  
Strong Field ◽  
High Energy ◽  
Pulse Front ◽  
Terahertz Pulses

Focusing Waveguide Structure for High-Gradient Electron Acceleration by Picosecond Terahertz Pulses

2021 ◽  
Vol 64 (3) ◽  
pp. 216-226
Author(s):  
S.B. Bodrov ◽  
A.A. Vikharev ◽  
S.V. Kuzikov ◽  
A.N. Stepanov ◽  
A.E. Fedotov
Keyword(s):  
Electron Acceleration ◽  
Waveguide Structure ◽  
High Gradient ◽  
Terahertz Pulses

scholarly journals Generation of strong-field spectrally tunable terahertz pulses

2020 ◽  
Vol 28 (23) ◽  
pp. 33921
Author(s):  
A. V. Ovchinnikov ◽  
O. V. Chefonov ◽  
M. B. Agranat ◽  
V. E. Fortov ◽  
M. Jazbinsek ◽  
...  
Keyword(s):  
Strong Field ◽  
Terahertz Pulses

High resolution STEM imaging study on high Tc superconductor YBa2CuaO7-x

1988 ◽  
Vol 46 ◽  
pp. 882-883
Author(s):  
H.-J. Ou ◽  
J. M. Cowley
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Grain Boundary ◽  
Strong Field ◽  
Imaging Study ◽  
Structure Defects ◽  
High Tc ◽  
High Tc Superconductor ◽  
Diffraction Patterns ◽  
Lattice Planes

Using the dedicate VG-HB5 STEM microscope, the crystal structure of high Tc superconductor of YBa2Cu3O7-x has been studied via high resolution STEM (HRSTEM) imaging and nanobeam (∽3A) diffraction patterns. Figure 1(a) and 2(a) illustrate the HRSTEM image taken at 10' times magnification along [001] direction and [100] direction, respectively. In figure 1(a), a grain boundary with strong field contrast is seen between two crystal regions A and B. The grain boundary appears to be parallel to a (110) plane, although it is not possible to determine [100] and [001] axes as it is in other regions which contain twin planes [3]. Following the horizontal lattice lines, from left to right across the grain boundary, a lattice bending of ∽4° is noticed. Three extra lattice planes, indicated by arrows, were found to terminate at the grain boundary and form dislocations. It is believed that due to different chemical composition, such structure defects occur during crystal growth. No bending is observed along the vertical lattice lines.

RADIATIVE COLLISIONS IN A STRONG FIELD REGIME

1985 ◽  
Vol 46 (C1) ◽  
pp. C1-85-C1-95
Author(s):  
P. Pillet ◽  
R. Kachru ◽  
N. H. Tran ◽  
W. W. Smith ◽  
T. F. Gallagher
Keyword(s):  
Strong Field
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