BROWSE

Related Scientist

jo,myunghoon's photo.

jo,myunghoon
초강력레이저과학연구단
more info

ITEM VIEW & DOWNLOAD

Strong terahertz emission from electromagnetic diffusion near cutoff in plasma

Cited 27 time in webofscience Cited 27 time in scopus
1,497 Viewed 459 Downloaded
Title
Strong terahertz emission from electromagnetic diffusion near cutoff in plasma
Author(s)
M-H Cho; Kim, YK; Suk, H; Ersfeld, B; Jaroszynski, DA; Hur, MS
Subject
laser-plasma, terahertz radiation, laser wakefield
Publication Date
2015-04
Journal
NEW JOURNAL OF PHYSICS, v.17, pp.043045
Publisher
IOP PUBLISHING LTD
Abstract
Anew mechanism for electromagnetic emission in the terahertz (THz) frequency regime from laser-plasma interactions is described. A localized and long-lasting transverse current is produced by two counter-propagating short laser pulses in weakly magnetized plasma. We show that the electromagnetic wave radiating from this current source, even though its frequency is close to cut-off of the ambient plasma, grows and diffuses towards the plasma-vacuum boundary, emitting a strong monochromatic THz wave. With driving laser pulses of moderate power, the THz wave has a field strength of tens of MV m(-1), a frequency of a few THz and a quasi-continuous power that exceeds all previous monochromatic THz sources. The novelty of the mechanism lies in a diffusing electromagnetic wave close to cut-off, which is modelled by a continuously driven complex diffusion equation
URI
https://pr.ibs.re.kr/handle/8788114/2057
DOI
10.1088/1367-2630/17/4/043045
ISSN
1367-2630
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
(Strong terahertz)New Journal of Physics, V17 p043045.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse