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Terahertz polarization imaging
Optics Letters, 2005 We present a new method to measure the polarization state of a terahertz pulse by using a modified electro-optic sampling setup. To illustrate the power of this method, we show two examples in which the knowledge of the polarization of the terahertz pulse is essential for interpreting the results: spectroscopy measurements on polystyrene foam and ...
N. C. J. van der Valk +2 more
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Terahertz quantum sensing [PDF]
Science Advances, 2020 Quantum sensing enables the measurement of sample properties in the terahertz frequency range by detecting visible photons.
Mirco Kutas +5 more
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IEEE Access, 2021 High-frequency vibration of motion platform leads to paired echo for synthetic aperture radar (SAR) imaging, especially in terahertz band due to its shorter wave length.
Yinwei Li +5 more
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Scientific Reports, 2022 With the continuous development of terahertz (THz) detection technology, the use of terahertz spectroscopy to study chemical samples has become one of the indispensable tools in the field of biochemistry.
Qinghao Meng +6 more
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Terahertz spectra of electrolyte solutions under applied electric and magnetic fields
Journal of the European Optical Society-Rapid Publications, 2022 Most biomolecules require an aqueous environment to fully exert their biological activity. However, the rotation mode, vibration mode, and energy associated with the hydrogen bonding network of water are in the terahertz band, resulting in strong ...
Shen Yan +6 more
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Complete Terahertz Polarization Control with Broadened Bandwidth via Dielectric Metasurfaces
Nanoscale Research Letters, 2021 We demonstrate terahertz dielectric metasurfaces with anisotropic multipoles within the framework of the generalized Huygens principle, in which the interference among these multipoles achieves giant phase shift with broadened bandwidth and high ...
Dacheng Wang +3 more
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Optics Letters, 2018 We realized a phase retrieval technique using terahertz (THz) radiation as an alternative to THz digital holography, named THz ptychography. Ptychography has been used in x-ray imaging as a groundbreaking improvement of conventional coherent diffraction imaging. Here we show that ptychography can be performed at THz frequencies too. We reconstructed an
Lorenzo Valzania +3 more
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Optics Express, 2012 The ability to retrieve information from different layers within a stratified sample using terahertz pulsed reflection imaging and spectroscopy has traditionally been resolution limited by the pulse width available. In this paper, a deconvolution algorithm is presented which circumvents this resolution limit, enabling deep sub-wavelength and sub-pulse ...
Gillian C. Walker +7 more
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Journal of Biomedical Optics, 2011 We present an overview and history of terahertz (THz) sources for readers of the biomedical and optical community for applications in physics, biology, chemistry, medicine, imaging, and spectroscopy. THz low-frequency vibrational modes are involved in many biological, chemical, and solid state physical processes.
Pavel, Shumyatsky, Robert R, Alfano
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Reconfigurable Terahertz Spatial Deflection Varifocal Metamirror
Micromachines, 2023 A traditional optical lens usually has a fixed focus, and its focus controlling relies on a bulky lens component, which makes integration difficult.
Jianhui Fang +10 more
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