Spatial polarization variation in terahertz electromagnetic wave focused by off-axis parabolic mirror
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In this article, the spatial distribution of the polarization state of a terahertz electromagnetic wave focused by an off-axis parabolic mirror (OPM) in the focal plane was investigated.Abstract:
We have investigated the spatial distribution of the polarization state of a terahertz electromagnetic wave focused by an off-axis parabolic mirror (OPM) in the focal plane. We employed polarization-resolved terahertz time-domain spectroscopy and found that a steep spatial variation in the polarization state appears slightly distant from the focus when a linearly polarized terahertz wave is focused. The spatial variation includes an abrupt change in the polarization state (states change between circular and linear polarizations) within a wavelength. The observed phenomena are confirmed by numerical calculations and are shown to be intrinsic to the reflection from the OPM.read more
Citations
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Terahertz Polarization Imaging and Its Applications
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References
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Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations
Olaf Schubert,Matthias Hohenleutner,F. Langer,Benedikt Urbanek,Christoph Lange,U. Huttner,D. Golde,Torsten Meier,Mackillo Kira,Stephan W. Koch,Rupert Huber +10 more
TL;DR: In this article, a phase-stable, high-harmonic transients over the whole frequency range of 0.1-675 THz were obtained. But the frequency of 30 THz was not considered.
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Coherent terahertz control of antiferromagnetic spin waves
Tobias Kampfrath,Tobias Kampfrath,Tobias Kampfrath,Alexander Sell,Gregor Klatt,Alexej Pashkin,S. Mahrlein,Thomas Dekorsy,Martin Wolf,Manfred Fiebig,Alfred Leitenstorfer,Rupert Huber +11 more
TL;DR: In this paper, the magnetic component of terahertz transients enables ultrafast control of the spin degree of freedom in the NiO at frequencies as high as 1.5 GHz.
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Velocity matching by pulse front tilting for large area THz-pulse generation.
TL;DR: A generally applicable velocity matching method for THz-pulse generation by optical rectification in the range below the phonon frequency of the nonlinear material is proposed and advantages in comparison to the electro-optic Cherenkov effect and non-collinear beam mixing are discussed.
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Single-cycle terahertz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3
TL;DR: In this article, a tilted-pump-pulse front scheme was used to generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3.
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Single-cycle THz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3
TL;DR: In this article, a tilted-pulse-intensity-front scheme was used to generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3.