☆ 4.6 Article

Unidirectional spintronic terahertz emitters with high efficiency

OPTICS LETTERS (2022)

Related references

Note: Only part of the references are listed.

Article Chemistry, Multidisciplinary

Nanoplasmonic-Enhanced Spintronic Terahertz Emission

Shaojie Liu et al.

Summary: The fashionable spintronic terahertz (THz) emission has opened up new pathways for contactless diagnosing femtosecond spin currents and presents a potential solution for improving THz efficiency through gold nanorods (GNRs) plasmonic resonances. Systematic investigations reveal the effectiveness of surface plasmon resonance in increasing THz emission from W/CoFeB/Pt heterostructures. Theoretical interpretations and numerical simulations semiquantitatively reproduce the experimental results, suggesting the potential for developing functional nano-THz optospintronic devices.

ADVANCED MATERIALS INTERFACES (2022)

Add to Collection

Article Optics

Cascaded Amplification and Manipulation of Terahertz Emission by Flexible Spintronic Heterostructures

Zuanming Jin et al.

Summary: This study demonstrates an efficient and practical approach to enhance and manipulate THz generation based on a cascaded Pt/CoFe/Ta trilayer fabricated on a flexible PET substrate. The cascaded design enables all THz emission from each PET/STE propagating almost in-phase and yields a 1.55 times amplification compared to a single PET/STE. Two proof-of-concept demonstrations highlight the potential of flexible PET/STE for building blocks of advanced functionalities.

LASER & PHOTONICS REVIEWS (2022)

Add to Collection

Article Multidisciplinary Sciences

Electric-field control of nonlinear THz spintronic emitters

Piyush Agarwal et al.

Summary: Energy-efficient spintronic technology holds tremendous potential for next-generation processors operating at terahertz frequencies. In this study, a nonlinear electric-field control of terahertz spin current-based emitters was demonstrated using a piezoelectric material. This breakthrough offers opportunities for the realization of tunable energy-efficient spintronic-photonic integrated platforms.

NATURE COMMUNICATIONS (2022)

Add to Collection

Article Optics

Spintronic terahertz emitter with integrated electromagnetic control

Yunqing Jiang et al.

Summary: This article introduces the design of a new generation of spintronic THz emitters. The new emitter not only simplifies the ancillary equipment, but also has a larger THz signal compared to traditional THz systems. Experimental results and theoretical calculations demonstrate its stable THz signal generation ability. By optimizing the spin thin film, a low magnetic field is sufficient for high performance THz emission.

CHINESE OPTICS LETTERS (2022)

Add to Collection

Article Nanoscience & Nanotechnology

Enhanced Nonlinear Optical Responses of Layered Epsilon-near-Zero Metamaterials at Visible Frequencies

Sisira Suresh et al.

Summary: This study demonstrates the strong nonlinear optical properties of an optical ENZ metamaterial, showing that the nonlinear enhancement is proportional to the linear effective refractive index. In contrast to homogeneous ENZ materials, these metamaterials offer greater tunability and can be designed with large nonlinearities at any specified optical wavelength within the visible spectrum.

ACS PHOTONICS (2021)

Add to Collection

Article Physics, Applied

Enhanced directive terahertz radiation emission from a horn antenna-coupled W/Fe/Pt spintronic film stack

B. Y. Shahriar et al.

Summary: Enhanced directive terahertz radiation emission is demonstrated from a spintronic THz radiation emitter coupled with a horn antenna, avoiding the use of additional lenses. The waveguide-fed horn antenna is fabricated using 3D lithography and directly coupled to the THz-emitting film. The antenna-coupled emitter provides increased signal power and can serve as a directive bandpass filter for platforms with size constraints.

APPLIED PHYSICS LETTERS (2021)

Add to Collection

Article Materials Science, Multidisciplinary

Separation of emission mechanisms in spintronic terahertz emitters

Yongshan Liu et al.

Summary: Spintronic thin films have been found to be high-performance broadband terahertz emitters, with emission mechanisms depending on the thickness of the ferromagnetic layer. The suppression of spin-charge conversion was observed when an ultrathin Al2O3 layer was inserted between the ferromagnetic and heavy metal layers, in agreement with theoretical predictions based on a simple spin-diffusion model.

PHYSICAL REVIEW B (2021)

Add to Collection

Article Multidisciplinary Sciences

Electrically-driven Yagi-Uda antennas for light

Rene Kullock et al.

NATURE COMMUNICATIONS (2020)

Add to Collection

Article Optics

Beam steering of a single nanoantenna

Hwi-Min Kim et al.

OPTICS EXPRESS (2020)

Add to Collection

Article Nanoscience & Nanotechnology

Near-field Terahertz Sensing of HeLa Cells and Pseudomonas Based on Monolithic Integrated Metamaterials with a Spintronic Terahertz Emitter

Zhongyang Bai et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

Add to Collection

Article Physics, Applied

Impact of pump wavelength on terahertz emission of a cavity-enhanced spintronic trilayer

R. I. Herapath et al.

APPLIED PHYSICS LETTERS (2019)

Add to Collection

Article Multidisciplinary Sciences

Temporal and spectral fingerprints of ultrafast all-coherent spin switching

S. Schlauderer et al.

NATURE (2019)

Add to Collection

Article Physics, Applied

Antenna-coupled spintronic terahertz emitters driven by a 1550nm femtosecond laser oscillator

U. Nandi et al.

APPLIED PHYSICS LETTERS (2019)

Add to Collection

Article Physics, Applied

Terahertz spectroscopy for all-optical spintronic characterization of the spin-Hall-effect metals Pt, W and Cu80lr20

T. S. Seifert et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2018)

Add to Collection

Article Materials Science, Multidisciplinary

Highly Efficient Spintronic Terahertz Emitter Enabled by Metal-Dielectric Photonic Crystal

Zheng Feng et al.

ADVANCED OPTICAL MATERIALS (2018)

Add to Collection

Article Optics

Efficient metallic spintronic emitters of ultrabroadband terahertz radiation

T. Seifert et al.

NATURE PHOTONICS (2016)

Add to Collection

Article Optics

Flexible terahertz wire grid polarizer with high extinction ratio and low loss

A. Ferraro et al.

OPTICS LETTERS (2016)

Add to Collection

Article Nanoscience & Nanotechnology

Terahertz spin current pulses controlled by magnetic heterostructures

T. Kampfrath et al.

NATURE NANOTECHNOLOGY (2013)

Add to Collection

Article Optics

Controllable directive radiation of a circularly polarized dipole above planar metal surface

Zheng Xi et al.

OPTICS EXPRESS (2013)

Add to Collection

Article Optics

Circularly polarized unidirectional emission via a coupled plasmonic spiral antenna

Guanghao Rui et al.

OPTICS LETTERS (2011)

Add to Collection

Article Physics, Applied

Coherent terahertz emission from ferromagnetic films excited by femtosecond laser pulses

E Beaurepaire et al.

APPLIED PHYSICS LETTERS (2004)

Add to Collection

© Peeref 2019-2024. All rights reserved.