Ultrafast graphene-based broadband THz detector

Martin Mittendorff; Stephan Winnerl; Josef Kamann; Jonathan Eroms; Dieter Weiss; Harald Schneider; Manfred Helm

doi:10.1063/1.4813621

Ultrafast graphene-based broadband THz detector

Optics 2013-07-18 v1 Mesoscale and Nanoscale Physics

Authors: Martin Mittendorff , Stephan Winnerl , Josef Kamann , Jonathan Eroms , Dieter Weiss , Harald Schneider , Manfred Helm

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We present an ultrafast graphene-based detector, working in the THz range at room temperature. A logarithmic-periodic antenna is coupled to a graphene flake that is produced by exfoliation on SiO2. The detector was characterized with the free-electron laser FELBE for wavelengths from 8 um to 220 um. The detector rise time is 50 ps in the wavelength range from 30 um to 220 um. Autocorrelation measurements exploiting the nonlinear photocurrent response at high intensities reveal an intrinsic response time below 10 ps. This detector has a high potential for characterizing temporal overlaps, e. g. in two-color pump-probe experiments.

Keywords

graphene plasmonics terahertz radiation frequency comb spectroscopy

Cite

@article{arxiv.1305.5342,
  title  = {Ultrafast graphene-based broadband THz detector},
  author = {Martin Mittendorff and Stephan Winnerl and Josef Kamann and Jonathan Eroms and Dieter Weiss and Harald Schneider and Manfred Helm},
  journal= {arXiv preprint arXiv:1305.5342},
  year   = {2013}
}

Ultrafast graphene-based broadband THz detector

Abstract

Keywords

Cite

Related papers