Results 191 to 200 of about 1,799,704 (293)

Polarimetry terahertz imaging of human breast cancer surgical specimens. [PDF]

J Med Imaging (Bellingham)
Gurjar N, Bailey K, El-Shenawee M.
europepmc   +1 more source

Deep Learning Classification of Breast Cancer Tissue from Terahertz Imaging Through Wavelet Synchro-Squeezed Transformation and Transfer Learning. [PDF]

J Infrared Millim Terahertz Waves, 2022
Liu H, Vohra N, Bailey K, El-Shenawee M, Nelson AH.   +4 more
europepmc   +1 more source

High‐Speed Integrated Graphene‐Silicon Slot‐Waveguide Electro‐Absorption Modulator at 2 and 1.5 µm Wavebands

Laser &Photonics Reviews, EarlyView.
A high‐speed, efficient, robust, and compact 2‐μm$\mathrm{\mu}\mathrm{m}$ waveband E/O absorption modulator based on a graphene‐silicon slot waveguide is demonstrated. This work represents a significant advancement towards the realization of high‐speed integrated E/O modulators for optical communication systems operating at the 2‐μm$\mathrm{\mu}\mathrm{
Chao Luan, Deming Kong, Yunhong Ding, Hao Hu   +3 more
wiley   +1 more source

FPGA Readout for Frequency-Multiplexed Array of Micromechanical Resonators for Sub-Terahertz Imaging. [PDF]

Sensors (Basel)
Gregorat L, Cautero M, Pitanti A, Vicarelli L, La Mura M, Bagolini A, Sergo R, Carrato S, Cautero G.   +8 more
europepmc   +1 more source

Fast FMCW Terahertz Imaging for In-Process Defect Detection in Press Sleeves for the Paper Industry and Image Evaluation with a Machine Learning Approach. [PDF]

Sensors (Basel), 2021
Bauer M, Hussung R, Matheis C, Reichert H, Weichenberger P, Beck J, Matuschczyk U, Jonuscheit J, Friederich F.   +8 more
europepmc   +1 more source

Intensity Noise Dynamics in Terahertz Quantum Cascade Lasers

Laser &Photonics Reviews, EarlyView.
Intensity‐noise dynamics in terahertz quantum cascade lasers are investigated across single‐mode, dense‐comb and harmonic‐comb regimes using graphene thermoelectric detectors. Harmonic combs show ∼10% lower relative intensity noise, while RIN scales as P0−γ$P_0^{ - \gamma }$ with γ≈1.2$\gamma \approx 1.2$, revealing a crossover from spontaneous ...
M. Alejandro Justo‐Guerrero, Leonardo Viti, Vladimir Pushkarev, Lianhe Li, Edmund H. Linfield, Miriam S. Vitiello   +5 more
wiley   +1 more source

Research on Non-Destructive Quality Detection of Sunflower Seeds Based on Terahertz Imaging Technology. [PDF]

Foods
Ge H, Guo C, Jiang Y, Zhang Y, Zhou W, Wang H.   +5 more
europepmc   +1 more source

From Planar to 3D Nanophotonic Lenses: Advancing Design, Fabrication, and Applications

Laser &Photonics Reviews, EarlyView.
Three‐dimensional nanophotonic lenses are enabled by an integrated workflow that links design parameterization, full‐wave electromagnetic simulation, computational optimization, and freeform fabrication. This Review summarizes how these tools expand optical design freedom beyond a single patterned plane by enriching the local meta‐atom response and ...
Wei Zhu, Lyudmila V. Goncharova, Eric Johlin   +2 more
wiley   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

Laser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim, Mai Tal, Xiaoxi Xu, Tal Ellenbogen   +3 more
wiley   +1 more source

Chiral Quasi‐BICs Stemming From a Γ‐point Degeneracy

Laser &Photonics Reviews, EarlyView.
Band degeneracies universally exist in 2D periodic systems. However, the studies on the intrinsic properties of those isolated points remain limited. By exploring 3D chiral perturbations, chiral quasi‐BICs are achieved through a Γ‐point degeneracy in resonant metasurfaces with C4 symmetry.
Bohan Zhang, Dongha Yang, Yuhao Wu, Mingqi Zheng, Wei Zhu, Lei Kang, Kang Du, Douglas H. Werner, Shengxiang Wang   +8 more
wiley   +1 more source