Slit waveguide based terahertz near-field microscopy: Prospects and limitations

Merbold, Hannes; Feurer, Thomas

doi:10.1063/1.3294623

Cited by 7 publications

(6 citation statements)

References 37 publications

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“…We employ an experimental geometry where the slit array on the Si substrate is sandwiched between two lithium niobate (LN) crystals. 13,14 THz waves are generated in the first crystal, propagate through the sample, and are visualized in the second crystal. Snapshots of the waveforms detected in the probe crystal are shown in Figs.…”

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confidence: 99%

Concurrent field enhancement and high transmission of THz radiation in nanoslit arrays

Shalaby

Merbold

Peccianti

et al. 2011

Applied Physics Letters

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We experimentally and numerically investigate the transmission of THz radiation through uniform nanoslit arrays. These structures are capable of inducing plasmon-mediated field enhancement while concurrently providing high field transmission. Combined with intense THz radiation, estimated field strengths as high as 26 MV/cm are obtained in the near-field regime which will facilitate nonlinear THz experiments. V

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confidence: 99%

Concurrent field enhancement and high transmission of THz radiation in nanoslit arrays

Shalaby

Merbold

Peccianti

et al. 2011

Applied Physics Letters

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“…It is therefore possible to sandwich arbitrary substances or structures between two crystals and visualize the transmitted and reflected waveforms. A similar arrangement has recently been used to investigate the prospects and limitations of slit waveguide based THz near-field microscopy [22].…”

Section: Methodsmentioning

confidence: 99%

Spatiotemporal Visualization of THz Near-Fields in Metamaterial Arrays

Merbold

Bitzer

Enderli

et al. 2010

J Infrared Milli Terahz Waves

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We present an experimental approach to record the spatiotemporal electric field distribution of coherent broadband THz pulses propagating through planar metamaterial arrays. The electric field can be measured with sub-wavelength precision within a volume that is several wavelengths in size, thus, having the potential to map the near-field to far-field transition of the resonant structures constituting the metamaterial. To demonstrate the potential we present measurements of THz pulses propagating through a planar array of double split-ring resonators and their inverse analogues.

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“…166 The field of polaritonics, 167 which enables visualization of THz field propagation, is also becoming useful for characterizing the performance of strongly subwavelength λ/ 1000 slits. 168 Additionally, more macroscale approaches are being used for fabricating THz optics. Superfocusing optics have achieved THz focusing in two directions with dimensions of λ/ 260 by λ/145.…”

Section: Analytical Chemistrymentioning

confidence: 99%