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

Singh, Abhishek; Pashkin, Alexej; Winnerl, Stephan; Welsch, Malte; Beckh, Cornelius; Sulzer, Philipp; Leitenstorfer, Alfred; Helm, Manfred; Schneider, Harald

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

Dateien

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Datum

2020

Autor:innen

Singh, Abhishek

Pashkin, Alexej

Winnerl, Stephan

Welsch, Malte

Beckh, Cornelius

Sulzer, Philipp

Leitenstorfer, Alfred

Helm, Manfred

Schneider, Harald

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Light: Science & Applications. Nature Publishing Group. 2020, 9(1), 30. eISSN 2047-7538. Available under: doi: 10.1038/s41377-020-0265-4

Zusammenfassung

Phase-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.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

SINGH, 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/s41377-020-0265-4

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}
}

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