Narrow-bandwidth high-order harmonics driven by long-duration hot spots

Maxim Kozlov, Ofer Kfir, Avner Fleischer, Alex Kaplan, Tal Carmon, Harald G L Schwefel, Guy Bartal, Oren Cohen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We predict and investigate the emission of high-order harmonics by atoms that cross intense laser hot spots that last for a nanosecond or longer. An atom that moves through a nanometer-scale hot spot at characteristic thermal velocity can emit high-order harmonics in a similar fashion to an atom that is irradiated by a short-duration (picosecond-scale) laser pulse. We analyze the collective emission from a thermal gas and from a jet of atoms. In both cases, the line shape of a high-order harmonic exhibits a narrow spike with spectral width that is determined by the bandwidth of the driving laser. Finally, we discuss a scheme for producing long-duration laser hot spots with intensity in the range of the intensity threshold for high-harmonic generation. In the proposed scheme, the hot spot is produced by a long laser pulse that is consecutively coupled to a high-quality micro-resonator and a metallic nano-antenna. This system may be used for generating ultra-narrow bandwidth extreme-ultraviolet radiation through frequency up-conversion of a low-cost compact pump laser.

Original languageEnglish
Article number063036
JournalNew Journal of Physics
Volume14
DOIs
Publication statusPublished - Jun 2012
Externally publishedYes

Fingerprint

bandwidth
harmonics
lasers
atoms
extreme ultraviolet radiation
pulses
spikes
line shape
harmonic generations
antennas
resonators
pumps
thresholds
gases

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kozlov, M., Kfir, O., Fleischer, A., Kaplan, A., Carmon, T., Schwefel, H. G. L., ... Cohen, O. (2012). Narrow-bandwidth high-order harmonics driven by long-duration hot spots. New Journal of Physics, 14, [063036]. https://doi.org/10.1088/1367-2630/14/6/063036

Narrow-bandwidth high-order harmonics driven by long-duration hot spots. / Kozlov, Maxim; Kfir, Ofer; Fleischer, Avner; Kaplan, Alex; Carmon, Tal; Schwefel, Harald G L; Bartal, Guy; Cohen, Oren.

In: New Journal of Physics, Vol. 14, 063036, 06.2012.

Research output: Contribution to journalArticle

Kozlov, M, Kfir, O, Fleischer, A, Kaplan, A, Carmon, T, Schwefel, HGL, Bartal, G & Cohen, O 2012, 'Narrow-bandwidth high-order harmonics driven by long-duration hot spots', New Journal of Physics, vol. 14, 063036. https://doi.org/10.1088/1367-2630/14/6/063036
Kozlov, Maxim ; Kfir, Ofer ; Fleischer, Avner ; Kaplan, Alex ; Carmon, Tal ; Schwefel, Harald G L ; Bartal, Guy ; Cohen, Oren. / Narrow-bandwidth high-order harmonics driven by long-duration hot spots. In: New Journal of Physics. 2012 ; Vol. 14.
@article{a847f3b475424a8395ead1bd228250bf,
title = "Narrow-bandwidth high-order harmonics driven by long-duration hot spots",
abstract = "We predict and investigate the emission of high-order harmonics by atoms that cross intense laser hot spots that last for a nanosecond or longer. An atom that moves through a nanometer-scale hot spot at characteristic thermal velocity can emit high-order harmonics in a similar fashion to an atom that is irradiated by a short-duration (picosecond-scale) laser pulse. We analyze the collective emission from a thermal gas and from a jet of atoms. In both cases, the line shape of a high-order harmonic exhibits a narrow spike with spectral width that is determined by the bandwidth of the driving laser. Finally, we discuss a scheme for producing long-duration laser hot spots with intensity in the range of the intensity threshold for high-harmonic generation. In the proposed scheme, the hot spot is produced by a long laser pulse that is consecutively coupled to a high-quality micro-resonator and a metallic nano-antenna. This system may be used for generating ultra-narrow bandwidth extreme-ultraviolet radiation through frequency up-conversion of a low-cost compact pump laser.",
author = "Maxim Kozlov and Ofer Kfir and Avner Fleischer and Alex Kaplan and Tal Carmon and Schwefel, {Harald G L} and Guy Bartal and Oren Cohen",
year = "2012",
month = "6",
doi = "10.1088/1367-2630/14/6/063036",
language = "English",
volume = "14",
journal = "New Journal of Physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Narrow-bandwidth high-order harmonics driven by long-duration hot spots

AU - Kozlov, Maxim

AU - Kfir, Ofer

AU - Fleischer, Avner

AU - Kaplan, Alex

AU - Carmon, Tal

AU - Schwefel, Harald G L

AU - Bartal, Guy

AU - Cohen, Oren

PY - 2012/6

Y1 - 2012/6

N2 - We predict and investigate the emission of high-order harmonics by atoms that cross intense laser hot spots that last for a nanosecond or longer. An atom that moves through a nanometer-scale hot spot at characteristic thermal velocity can emit high-order harmonics in a similar fashion to an atom that is irradiated by a short-duration (picosecond-scale) laser pulse. We analyze the collective emission from a thermal gas and from a jet of atoms. In both cases, the line shape of a high-order harmonic exhibits a narrow spike with spectral width that is determined by the bandwidth of the driving laser. Finally, we discuss a scheme for producing long-duration laser hot spots with intensity in the range of the intensity threshold for high-harmonic generation. In the proposed scheme, the hot spot is produced by a long laser pulse that is consecutively coupled to a high-quality micro-resonator and a metallic nano-antenna. This system may be used for generating ultra-narrow bandwidth extreme-ultraviolet radiation through frequency up-conversion of a low-cost compact pump laser.

AB - We predict and investigate the emission of high-order harmonics by atoms that cross intense laser hot spots that last for a nanosecond or longer. An atom that moves through a nanometer-scale hot spot at characteristic thermal velocity can emit high-order harmonics in a similar fashion to an atom that is irradiated by a short-duration (picosecond-scale) laser pulse. We analyze the collective emission from a thermal gas and from a jet of atoms. In both cases, the line shape of a high-order harmonic exhibits a narrow spike with spectral width that is determined by the bandwidth of the driving laser. Finally, we discuss a scheme for producing long-duration laser hot spots with intensity in the range of the intensity threshold for high-harmonic generation. In the proposed scheme, the hot spot is produced by a long laser pulse that is consecutively coupled to a high-quality micro-resonator and a metallic nano-antenna. This system may be used for generating ultra-narrow bandwidth extreme-ultraviolet radiation through frequency up-conversion of a low-cost compact pump laser.

UR - http://www.scopus.com/inward/record.url?scp=84863682671&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863682671&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/14/6/063036

DO - 10.1088/1367-2630/14/6/063036

M3 - Article

VL - 14

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 063036

ER -