High-energy, short-duration bursts of coherent terahertz radiation from an embedded plasma dipole

Kyu Been Kwon, Teyoun Kang, Hyung Seon Song, Young-Kuk Kim, Bernhard Ersfeld, Dino A. Jaroszynski, Min Sup Hur

Research output: Contribution to journalArticle

3 Citations (Scopus)
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Abstract

Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted electromagnetic wave. While broadband emission from plasma waves in inhomogeneous plasma is well known, the underlying physics of narrowband emission at the plasma frequency observed in experiments and in solar radio-bursts is obscure. Here we show that a spatially-localized plasma dipole oscillation (PDO) can be generated when electrons are trapped in a moving train of potential wells produced by the ponderomotive force of two slightly detuned laser pulses that collide in plasma and give rise to a burst of quasimonochromatic radiation. The energy radiated in the terahertz spectral region can reach an unprecedented several millijoules, which makes it suitable for applications requiring short pulses of high-intensity, narrowband terahertz radiation.
Original languageEnglish
Article number145
Number of pages9
JournalScientific Reports
Volume8
DOIs
Publication statusPublished - 9 Jan 2018

Fingerprint

coherent radiation
bursts
dipoles
plasma oscillations
plasma frequencies
narrowband
radiation
solar radio bursts
electron oscillations
ponderomotive forces
energy
plasma waves
electron plasma
pulses
electromagnetic radiation
broadband
oscillations
physics
lasers
electrons

Keywords

  • electrons
  • plasma oscillations
  • POs
  • plasma frequency
  • electromagnetic wave
  • plasma dipole oscillation
  • PDO

Cite this

Kwon, Kyu Been ; Kang, Teyoun ; Song, Hyung Seon ; Kim, Young-Kuk ; Ersfeld, Bernhard ; Jaroszynski, Dino A. ; Hur, Min Sup. / High-energy, short-duration bursts of coherent terahertz radiation from an embedded plasma dipole. In: Scientific Reports. 2018 ; Vol. 8.
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abstract = "Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted electromagnetic wave. While broadband emission from plasma waves in inhomogeneous plasma is well known, the underlying physics of narrowband emission at the plasma frequency observed in experiments and in solar radio-bursts is obscure. Here we show that a spatially-localized plasma dipole oscillation (PDO) can be generated when electrons are trapped in a moving train of potential wells produced by the ponderomotive force of two slightly detuned laser pulses that collide in plasma and give rise to a burst of quasimonochromatic radiation. The energy radiated in the terahertz spectral region can reach an unprecedented several millijoules, which makes it suitable for applications requiring short pulses of high-intensity, narrowband terahertz radiation.",
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High-energy, short-duration bursts of coherent terahertz radiation from an embedded plasma dipole. / Kwon, Kyu Been; Kang, Teyoun; Song, Hyung Seon; Kim, Young-Kuk; Ersfeld, Bernhard; Jaroszynski, Dino A.; Hur, Min Sup.

In: Scientific Reports, Vol. 8, 145, 09.01.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-energy, short-duration bursts of coherent terahertz radiation from an embedded plasma dipole

AU - Kwon, Kyu Been

AU - Kang, Teyoun

AU - Song, Hyung Seon

AU - Kim, Young-Kuk

AU - Ersfeld, Bernhard

AU - Jaroszynski, Dino A.

AU - Hur, Min Sup

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AB - Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted electromagnetic wave. While broadband emission from plasma waves in inhomogeneous plasma is well known, the underlying physics of narrowband emission at the plasma frequency observed in experiments and in solar radio-bursts is obscure. Here we show that a spatially-localized plasma dipole oscillation (PDO) can be generated when electrons are trapped in a moving train of potential wells produced by the ponderomotive force of two slightly detuned laser pulses that collide in plasma and give rise to a burst of quasimonochromatic radiation. The energy radiated in the terahertz spectral region can reach an unprecedented several millijoules, which makes it suitable for applications requiring short pulses of high-intensity, narrowband terahertz radiation.

KW - electrons

KW - plasma oscillations

KW - POs

KW - plasma frequency

KW - electromagnetic wave

KW - plasma dipole oscillation

KW - PDO

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