Enhancement of the Monolayer Tungsten Disulfide Exciton Photoluminescence with a Two-Dimensional Material/Air/Gallium Phosphide In-Plane Microcavity

Mey, Oliver; Wall, Franziska; Schneider, Lorenz Maximilian; Günder, Darius; Walla, Frederik; Soltani, Amin; Roskos, Hartmut G.; Ni, Yang; Peng, Qing; Fang, Wei; Rahimi‐Iman, Arash

doi:10.1021/acsnano.8b09659

Cited by 25 publications

(17 citation statements)

References 48 publications

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“…[65], no attempt to quantify the depth of the grating based on the s-SNOM data was made. Similar studies were reported in [70], where a buried photonic resonator was studied in the near-IR/VISis spectral regime.…”

Section: Sub-surface Imaging and The Potential For Nano-tomographysupporting

confidence: 75%

Terahertz Nano-Imaging with s-SNOM

Wiecha¹,

Soltani²,

Roskos³

2022

Terahertz Technology

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Spectroscopy and imaging with terahertz radiation propagating in free space suffer from the poor spatial resolution which is a consequence of the comparatively large wavelength of the radiation (300 μm at 1 THz in vacuum) in combination with the Abbe diffraction limit of focusing. A way to overcome this limitation is the application of near-field techniques. In this chapter, we focus on one of them, scattering-type Scanning Near-field Optical Microscopy (s-SNOM) which − due to its versatility − has come to prominence in recent years. This technique enables a spatial resolution on the sub-100-nm length scale independent of the wavelength. We provide an overview of the state-of-the-art of this imaging and spectroscopy modality, and describe a few selected application examples in more detail.

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Section: Sub-surface Imaging and The Potential For Nano-tomographysupporting

confidence: 75%

Terahertz Nano-Imaging with s-SNOM

Wiecha¹,

Soltani²,

Roskos³

2022

Terahertz Technology

Self Cite

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“…It is worth mentioning that s-SNOM is not purely surface-sensitive, but probes a volume down to about 50 nm in dielectric media [294], which gives it tomographic capabilities [295][296][297][298]. This capability is still to be exploited in the THz frequency regime, e.g., for the (also quantitative) characterization of electrically conductive layers buried under a dielectric layer [299].…”

Section: Thz Nanoimaging and Nanoscopymentioning

confidence: 99%

Roadmap of Terahertz Imaging 2021

Valušis

Lisauskas

Yuan

et al. 2021

Sensors

191

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In this roadmap article, we have focused on the most recent advances in terahertz (THz) imaging with particular attention paid to the optimization and miniaturization of the THz imaging systems. Such systems entail enhanced functionality, reduced power consumption, and increased convenience, thus being geared toward the implementation of THz imaging systems in real operational conditions. The article will touch upon the advanced solid-state-based THz imaging systems, including room temperature THz sensors and arrays, as well as their on-chip integration with diffractive THz optical components. We will cover the current-state of compact room temperature THz emission sources, both optolectronic and electrically driven; particular emphasis is attributed to the beam-forming role in THz imaging, THz holography and spatial filtering, THz nano-imaging, and computational imaging. A number of advanced THz techniques, such as light-field THz imaging, homodyne spectroscopy, and phase sensitive spectrometry, THz modulated continuous wave imaging, room temperature THz frequency combs, and passive THz imaging, as well as the use of artificial intelligence in THz data processing and optics development, will be reviewed. This roadmap presents a structured snapshot of current advances in THz imaging as of 2021 and provides an opinion on contemporary scientific and technological challenges in this field, as well as extrapolations of possible further evolution in THz imaging.

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“…[54,55] It has been demonstrated that the PL of monolayer WS 2 on the patterned GaP substrate can be enhanced by tenfolds. [56] PL is relatively easy to implement in nanolasers based on 2D materials, and EL is an important step in industrialization. In this part, unique optical properties of 2D materials, including graphene, TMD, BP, and TI, are introduced.…”

Section: Optical Properties Of 2d Materialsmentioning

confidence: 99%

Nanolasers Based on 2D Materials

Sun

et al. 2020

Laser & Photonics Reviews

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Nanolasers, with small footprint and ultralow threshold, are promising for applications in data communication, on-chip optical computing, and optical interconnects. In addition to the microcavity design, the choice of gain material is another critical factor determining the optical performance of nanolasers. 2D materials are widely studied and applied in nanoscale optoelectronic devices due to their exceptional electrical, chemical, thermal, and optical properties caused by the unique layered structures. As emerging materials with unique optical properties, 2D materials are selected as effective gain materials for designing of nanolasers. In this review, the recent advances in nanolasers based on 2D materials are comprehensively addressed.

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Enhancement of the Monolayer Tungsten Disulfide Exciton Photoluminescence with a Two-Dimensional Material/Air/Gallium Phosphide In-Plane Microcavity

Cited by 25 publications

References 48 publications

Terahertz Nano-Imaging with s-SNOM

Terahertz Nano-Imaging with s-SNOM

Roadmap of Terahertz Imaging 2021

Nanolasers Based on 2D Materials

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