Dynamic optically induced planar terahertz quasioptics

Cooke, David G.; Jepsen, Peter Uhd

doi:10.1063/1.3153988

Cited by 11 publications

(1 citation statement)

References 20 publications

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“…The low-loss, dispersionless propagation characteristics of the PPWG have sparked significant interest in its use for spectroscopy in the THz region [38,242,246,248,[251][252][253][254][255][256][257][258]. Figure 24 shows a direct comparison of the absorption spectrum of microcrystalline 2,4-dinitrotoluene recorded at a temperature of 11 K, published by Laman et al [242].…”

Section: Static Thz-tds Of Solid-state Materialsmentioning

confidence: 99%

Terahertz spectroscopy and imaging – Modern techniques and applications

Jepsen

Cooke

Koch

2010

Laser & Photonics Reviews

1,716

977

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Over the past three decades a new spectroscopic technique with unique possibilities has emerged. Based on coherent and time-resolved detection of the electric field of ultrashort radiation bursts in the far-infrared, this technique has become known as terahertz time-domain spectroscopy (THz-TDS). In this review article the authors describe the technique in its various implementations for static and time-resolved spectroscopy, and illustrate the performance of the technique with recent examples from solid-state physics and physical chemistry as well as aqueous chemistry. Examples from other fields of research, where THz spectroscopic techniques have proven to be useful research tools, and the potential for industrial applications of THz spectroscopic and imaging techniques are discussed.

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Section: Static Thz-tds Of Solid-state Materialsmentioning

confidence: 99%

Terahertz spectroscopy and imaging – Modern techniques and applications

Jepsen

Cooke

Koch

2010

Laser & Photonics Reviews

1,716

977

View full text Add to dashboard Cite

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Strong terahertz radiation generation by beating of two laser beams in magnetized overdense plasma

et al. 2016

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Terahertz (THz) radiation generation by nonlinear mixing of two laser beams, obliquely incident on an overdense plasma is investigated. In an overdense plasma, the laser beams penetrate to only thin layer of a plasma surface and reflected. At this thin layer, the laser beams exert a ponderomotive force on the electrons of plasma and impart them oscillatory velocity at the different frequency of lasers. THz waves appear in the reflected component from the plasma surface. The amplitude of THz waves can be augmented by applying the magnetic field perpendicular to the direction of propagation of lasers. It is found that the field strength of the emitted THz radiations is sensitive to the angle of incident of the laser beams, beat frequency, and magnetic field strength. In this scheme, the magnetic field strength plays an important role for strong THz wave generation.

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Front-induced transitions control THz waves

et al. 2021

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Relativistically moving dielectric perturbations can be used to manipulate light in new and exciting ways beyond the capabilities of traditional nonlinear optics. Adiabatic interaction with the moving front modulates the wave simultaneously in both space and time, and manifests a front-induced transition in both wave vector and frequency yielding exotic effects including non-reciprocity and time-reversal. Here we introduce a technique called SLIPSTREAM, Spacetime Light-Induced Photonic STRucturEs for Advanced Manipulation, based on the creation of relativistic fronts in a semiconductor-filled planar waveguide by photoexcitation of mobile charge carriers. In this work, we demonstrate the capabilities of SLIPSTREAM for the manipulation of terahertz (THz) light pulses through relativistic front-induced transitions. In the sub-luminal front velocity regime, we generate temporally stretched THz waveforms, with a quasi-static field lasting for several picoseconds tunable with the front interaction distance. In the super-luminal regime, the carrier front outpaces the THz pulse and a time-reversal operation is performed via a front-induced intra-band transition. We anticipate our platform will be a versatile tool for future applications in the THz spectral band requiring direct and advanced control of light at the sub-cycle level.

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Dynamic optically induced planar terahertz quasioptics

Cited by 11 publications

References 20 publications

Terahertz spectroscopy and imaging – Modern techniques and applications

Terahertz spectroscopy and imaging – Modern techniques and applications

Strong terahertz radiation generation by beating of two laser beams in magnetized overdense plasma

Front-induced transitions control THz waves

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