High-Energy, Short-Duration Bursts of Coherent Terahertz Radiation from an Embedded Plasma Dipole

Kwon, Kyu Been; Kang, Tae Uk; Song, Hyung Seon; Kim, Young-Kuk; Ersfeld, Bernhard; Jaroszynski, D. A.; Hur, Min Sup

doi:10.1038/s41598-017-18399-3

Cited by 38 publications

(37 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2. As the driving pulses transmit through each other, the beat ponderomotive potential diminishes and the microbunches of electrons are phase-mixed to form a single macrobunch [10].…”

Section: Dipole Build-up By Trapped Particlesmentioning

confidence: 99%

Radiation emission from plasma oscillation

Hur

Song

Kwon

et al. 2019

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III

Self Cite

View full text Add to dashboard Cite

It is well known that an infinite homogeneous Langmuir wave, formed by accelerating charged particles, it does not emit electromagnetic radiation because of its electrostatic nature, which is represented by the zero curl of the electric field. To realise emission, the plasma density must be tailored such that the Langmuir wave takes on a non-zero component of the curl of the electric field. The mechanisms of inverse mode conversion or travelling wave antennae leads to emission of radiation. In these mechanisms, the emphasis is on energy conversion of the Langmuir 'wave' to an electromagnetic wave. However, an interesting way to cause the plasma wave to emit radiation is to isolate a single 'oscillator' composed of a localized plasma block, i.e., a plasma dipole. An outstanding question in the realization of this idea is how to isolate the plasma oscillation from the Langmuir wave. To answer this question, we propose a novel idea of colliding detuned counterpropagating laser pulses in plasma. Simulation results show that radiation is emitted from the isolated plasma dipole.

show abstract

“…2. As the driving pulses transmit through each other, the beat ponderomotive potential diminishes and the microbunches of electrons are phase-mixed to form a single macrobunch [10].…”

Section: Dipole Build-up By Trapped Particlesmentioning

confidence: 99%

Radiation emission from plasma oscillation

Hur

Song

Kwon

et al. 2019

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III

Self Cite

View full text Add to dashboard Cite

show abstract

“…Due to the appealing THz-matter interaction characteristics aforementioned and its own scientific value, many methods have been proposed to generate THz [6], including but not limited to the methods based on solid state oscillators [7], plasma dipole oscillators [8], quantum cascaded laser [9], laser pumped solid state devices [10] and electron beam accelerators [11,12] etc. However, most of these methods generally suffer from low energy per pulse.…”

Section: Introductionmentioning

confidence: 99%

Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure

Shi

Johnson

Reiche

2020

Phys. Rev. Accel. Beams

View full text Add to dashboard Cite

The advancement of the techniques of producing electromagnetic radiation in the terahertz range (1-20 THz) attracts a wide range of potential applications and the quest for powerful THz sources is everincreasing. The means to generate THz is an active research field and the energy per pulse is limited due to breakdown of the medium used. In this paper, we propose a compact yet powerful narrowband THz source based on two pillars of active research in the field of novel accelerators: laser plasma wakefield acceleration and high gradient dielectric lined structures. The laser plasma wakefield (LPW) injector is used to provide the relativistic electron bunches to an interaction tube, a dielectric lined waveguide (DLW), in order to generate THz. Due to the high gradient nature of both devices, the combination ends up with a very compact solution for mJ scale THz pulse generation. Potentially these pulses can be used as drivers for nonlinear phenomena in condensed matter, which can be probed using ultrashort x-ray pulses at the same free electron laser facility.

show abstract

“…For efficient excitation of large-amplitude plasma waves, either short laser pulses or relatively long electron beams can be applied. Further transformation of these waves into EM oscillations at the plasma frequency can be realized via the linear mode conversion assuming the presence of density gradients [25][26][27] or an external magnetic field [28][29][30]. On the other hand, plasma waves can participate in various nonlinear processes generating radiations at higher harmonics.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic emission due to nonlinear interaction of laser wakefields colliding in plasma at an oblique angle

Volchok,

Annenkov,

Timofeev

2020

Preprint

View full text Add to dashboard Cite

Head-on collision of laser-induced plasma wakefields with differing profiles of electrostatic potential has been recently found to be an efficient mechanism for generating high-power electromagnetic emission at the second harmonic of the plasma frequency [I. V.Timofeev et al. Phys. Plasmas 24, 103106 (2017)]. This mechanism is attractive for creating a source of tunable narrow-band coherent radiation in the terahertz frequency range. In this paper, we generalize the theory of electromagnetic emission produced by nonlinear interaction of two plasma wakes to the case of an arbitrary collision angle. Such a theory is used to evaluate the angular distribution of the second harmonic radiation as well as its total generation efficiency for parameters of the proof-of-principle experiment in which laser axes will be aligned with a small finite angle. Theoretical predictions are qualitatively confirmed by particle-in-cell simulations.

show abstract

High-Energy, Short-Duration Bursts of Coherent Terahertz Radiation from an Embedded Plasma Dipole

Cited by 38 publications

References 57 publications

Radiation emission from plasma oscillation

Radiation emission from plasma oscillation

Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure

Electromagnetic emission due to nonlinear interaction of laser wakefields colliding in plasma at an oblique angle

Contact Info

Product

Resources

About