Title data
Heindl, Moritz ; Kirkwood, Nicholas ; Lauster, Tobias ; Lang, Julia ; Retsch, Markus ; Mulvaney, Paul ; Herink, Georg:
Ultrafast imaging of terahertz electric waveforms using quantum dots.
In: Light : Science and Applications.
Vol. 11
(2022)
.
- No. 5.
ISSN 2047-7538
DOI: https://doi.org/10.1038/s41377-021-00693-5
Project information
Project title: |
Project's official title Project's id Open Access Publizieren No information |
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Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract in another language
Microscopic electric fields govern the majority of elementary excitations in condensed matter and drive electronics at
frequencies approaching the Terahertz (THz) regime. However, only few imaging schemes are able to resolve subwavelength
fields in the THz range, such as scanning-probe techniques, electro-optic sampling, and ultrafast electron
microscopy. Still, intrinsic constraints on sample geometry, acquisition speed and field strength limit their applicability.
Here, we harness the quantum-confined Stark-effect to encode ultrafast electric near-fields into colloidal quantum dot
luminescence. Our approach, termed Quantum-probe Field Microscopy (QFIM), combines far-field imaging of visible
photons with phase-resolved sampling of electric waveforms. By capturing ultrafast movies, we spatio-temporally
resolve a Terahertz resonance inside a bowtie antenna and unveil the propagation of a Terahertz waveguide excitation
deeply in the sub-wavelength regime. The demonstrated QFIM approach is compatible with strong-field excitation
and sub-micrometer resolution—introducing a direct route towards ultrafast field imaging of complex nanodevices inoperando.
Further data
Item Type: | Article in a journal |
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Refereed: | Yes |
Keywords: | Nanophotonics and plasmonics; Quantum dots |
Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VIII - Ultrafast Dynamics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VIII - Ultrafast Dynamics > Juniorprofessor Experimental Physics VIII - Ultrafast Dynamics - Juniorprof. Dr. Georg Herink Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics |
Result of work at the UBT: | Yes |
DDC Subjects: | 500 Science > 530 Physics |
Date Deposited: | 14 Jan 2022 08:24 |
Last Modified: | 19 Oct 2022 13:52 |
URI: | https://eref.uni-bayreuth.de/id/eprint/68357 |