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Journal Article

Quartz as an accurate high-field low-cost THz helicity detector

MPS-Authors
/persons/resource/persons266516

Frenzel,  Maximilian       
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons285365

Urban,  Joanna       
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons266518

Nest,  Leona
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21693

Kampfrath,  Tobias       
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons294956

Spencer,  Michael S.       
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons39359

Maehrlein,  Sebastian F.       
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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arXiv:2309.08286.pdf
(Preprint), 3MB

optica-11-3-362.pdf
(Publisher version), 2MB

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Citation

Frenzel, M., Urban, J., Nest, L., Kampfrath, T., Spencer, M. S., & Maehrlein, S. F. (2024). Quartz as an accurate high-field low-cost THz helicity detector. Optica, 11(3), 362-370. doi:10.1364/OPTICA.515909.


Cite as: https://hdl.handle.net/21.11116/0000-000E-5214-F
Abstract
Emerging concepts employing angular momentum of THz light for ultrafast material control rely on the measurement of
undistorted intense THz fields and on the precise knowledge about sophisticated THz helicity states. Here, we establish
z-cut α-quartz as a precise electro-optic THz detector for full amplitude, phase, and polarization measurement of highly
intense THz fields, all at a fraction of costs of conventional THz detectors. We experimentally determine its detector
response function, in excellent agreement with our modeling. Thereupon, we develop a swift and reliable protocol to pre-
cisely measure arbitrary THz polarization and helicity states. This two-dimensional electro-optic sampling in α-quartz
fosters rapid and cost-efficient THz time-domain ellipsometry and enables the characterization of polarization-tailored
fields for driving chiral or other helicity-sensitive quasi-particles and topologies.