Results 241 to 250 of about 176,774 (326)

Terahertz graphene-based tunable capacitance metamaterials with ultra-high amplitude modulation depth. [PDF]

Light Sci Appl
Guo ZJ, Wu GB.
europepmc   +1 more source

Single‐Shot Full‐Stokes Analysis of Partially‐Polarized Light With a Photonic Deep Random Neural Network

Laser &Photonics Reviews, EarlyView.
Photonic neural networks are emerging as a powerful tool for analyzing light. The article reports a photonic deep random neural network that performs single‐shot low‐latency measurements of the state and degree of polarization with high accuracy. Using only a stack of glass diffusers on top of a small camera sensor, this neuromorphic polarization ...
Alessandro Petrini, Claudio Conti, Davide Pierangeli   +2 more
wiley   +1 more source

Multi-layered model for simulating the <i>in vivo</i> terahertz response of human skin. [PDF]

Biomed Opt Express
Page BG, Young JJ, Agarwal A, Guo X, Hardwicke J, Pickwell-MacPherson E.   +5 more
europepmc   +1 more source

Pulse Generation by On‐Chip Dispersion Compensation at 8 µm Wavelength

Laser &Photonics Reviews, EarlyView.
This work demonstrates on‐chip pulse generation at 8 μm$\mathrm{\mu}\mathrm{m}$ using chirped Bragg gratings in SiGe graded‐index photonic circuits to compensate the quadratic phase of quantum cascade laser frequency combs. With this approach pulses as short as 1.39 ps were produced, close to the transform limit, representing a key step toward compact,
Annabelle Bricout, Mathieu Bertrand, Philipp Täschler, Barbara Schneider, Victor Turpaud, Stefano Calcaterra, Davide Impelluso, Marco Faverzani, David Bouville, Jean‐René Coudevylle, Samson Edmond, Etienne Herth, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella, Jérôme Faist, Delphine Marris‐Morini   +17 more
wiley   +1 more source

Tunable Optical Bistability in Asymmetric Dielectric Sandwich with Graphene. [PDF]

Nanomaterials (Basel)
Lin Q, Liang W, Zhou R, Yang S, Li S.
europepmc   +1 more source

Terahertz Time-Domain Spectroscopy and Imaging of Biological Compounds and Tissues

, 2009
Anita R. Taulbee
openalex   +1 more source

Carrier Transport in Electrically‐Driven Photonic Crystal Membrane Lasers

Laser &Photonics Reviews, EarlyView.
A model to study carrier transport in photonic crystal lasers with a buried heterostructure active region and a lateral current injection scheme is presented. The model identifies unconventional leakage paths which explain low injection efficiencies and enhanced recombination at the p‐doping interface observed experimentally.
Mathias Marchal, Evangelos Dimopoulos, Kasper Spiegelhauer, Nikolaos Chatzaras, Marco Saldutti, Kresten Yvind, Yi Yu, Jesper Mørk   +7 more
wiley   +1 more source

Steerable terahertz beams using surface waves on an active metasurface. [PDF]

Sci Rep
Shiri Y, Lei J, Amarasinghe Y, Chen HT, Chang CC, Lilly MP, Addamane S, Mittleman DM.   +7 more
europepmc   +1 more source

Terahertz All‐Dielectric Maxwell Fisheye Lens Waveguide Crossings via Transformation Optics

Laser &Photonics Reviews, EarlyView.
All‐silicon terahertz waveguide crossings based on Maxwell fisheye lenses are reshaped using transformation optics to interface with planar waveguides while reducing mode mismatch. Realized via subwavelength perforations in a single etching step, 2 × 2 and 3 × 3 crossings achieve broadband transmission with low loss and ultralow crosstalk across 220 ...
Nikolaos Xenidis, Joachim Oberhammer, Dmitry Lioubtchenko   +2 more
wiley   +1 more source

Cavity electrodynamics of van der Waals heterostructures. [PDF]

Nat Phys
Kipp G, Bretscher HM, Schulte B, Herrmann D, Kusyak K, Day MW, Kesavan S, Matsuyama T, Li X, Langner SM, Hagelstein J, Sturm F, Potts AM, Eckhardt CJ, Huang Y, Watanabe K, Taniguchi T, Rubio A, Kennes DM, Sentef MA, Baudin E, Meier G, Michael MH, McIver JW.   +23 more
europepmc   +1 more source