Up to 70 THz bandwidth from an implanted Ge photoconductive antenna excited by a femtosecond Er:fibre laser

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dc.contributor.authorSingh, Abhishek
dc.contributor.authorPashkin, Alexej
dc.contributor.authorWinnerl, Stephan
dc.contributor.authorWelsch, Malte
dc.contributor.authorBeckh, Cornelius
dc.contributor.authorSulzer, Philipp
dc.contributor.authorLeitenstorfer, Alfred
dc.contributor.authorHelm, Manfred
dc.contributor.authorSchneider, Harald
dc.date.accessioned2020-04-22T09:13:43Z
dc.date.available2020-04-22T09:13:43Z
dc.date.issued2020eng
dc.description.abstractPhase-stable electromagnetic pulses in the THz frequency range offer several unique capabilities in time-resolved spectroscopy. However, the diversity of their application is limited by the covered spectral bandwidth. In particular, the upper frequency limit of photoconductive emitters - the most widespread technique in THz spectroscopy – reaches only up to 7 THz in the regular transmission mode due to absorption by infrared-active optical phonons. Here, we present ultrabroadband (extending up to 70 THz) THz emission from an Au-implanted Ge emitter that is compatible with mode-locked fibre lasers operating at wavelengths of 1.1 and 1.55 μm with pulse repetition rates of 10 and 20 MHz, respectively. This result opens up the possibility for the development of compact THz photonic devices operating up to multi-THz frequencies that are compatible with Si CMOS technology.eng
dc.description.versionpublishedeng
dc.identifier.doi10.1038/s41377-020-0265-4eng
dc.identifier.pmid32140221eng
dc.identifier.ppn1695622995
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/49249
dc.language.isoengeng
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.ddc530eng
dc.titleUp to 70 THz bandwidth from an implanted Ge photoconductive antenna excited by a femtosecond Er:fibre lasereng
dc.typeJOURNAL_ARTICLEeng
dspace.entity.typePublication
kops.citation.bibtex
@article{Singh2020bandw-49249,
  year={2020},
  doi={10.1038/s41377-020-0265-4},
  title={Up to 70 THz bandwidth from an implanted Ge photoconductive antenna excited by a femtosecond Er:fibre laser},
  number={1},
  volume={9},
  journal={Light: Science & Applications},
  author={Singh, Abhishek and Pashkin, Alexej and Winnerl, Stephan and Welsch, Malte and Beckh, Cornelius and Sulzer, Philipp and Leitenstorfer, Alfred and Helm, Manfred and Schneider, Harald},
  note={Article Number: 30}
}
kops.citation.iso690SINGH, Abhishek, Alexej PASHKIN, Stephan WINNERL, Malte WELSCH, Cornelius BECKH, Philipp SULZER, Alfred LEITENSTORFER, Manfred HELM, Harald SCHNEIDER, 2020. Up to 70 THz bandwidth from an implanted Ge photoconductive antenna excited by a femtosecond Er:fibre laser. In: Light: Science & Applications. Nature Publishing Group. 2020, 9(1), 30. eISSN 2047-7538. Available under: doi: 10.1038/s41377-020-0265-4deu
kops.citation.iso690SINGH, Abhishek, Alexej PASHKIN, Stephan WINNERL, Malte WELSCH, Cornelius BECKH, Philipp SULZER, Alfred LEITENSTORFER, Manfred HELM, Harald SCHNEIDER, 2020. Up to 70 THz bandwidth from an implanted Ge photoconductive antenna excited by a femtosecond Er:fibre laser. In: Light: Science & Applications. Nature Publishing Group. 2020, 9(1), 30. eISSN 2047-7538. Available under: doi: 10.1038/s41377-020-0265-4eng
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