Results 191 to 200 of about 54,131 (291)

Large-area photonic circuits for terahertz detection and beam profiling. [PDF]

Light Sci Appl
Tomasino A, Shams-Ansari A, Lončar M, Benea-Chelmus IC.   +3 more
europepmc   +1 more source

A Linear‐to‐Linear Cross‐Polarization Conversion q‐BIC Metasurface for Transmission Mode Mid‐Infrared Spectral Filtering

Laser &Photonics Reviews, EarlyView.
Manipulating the ultranarrow linewidth spectral features of quasi bound states in the continuum is challenging. A metasurface supporting linear‐to‐linear cross‐polarization coupling efficiency surpassing 25% is proposed to address the issue. Less than 100 nm linewidth is achieved, enabling the device to be applied to wavelength‐selective polarization ...
Shuhao Wu, Simeng Zhu, Khue Tian Lai, Lianping Hou, Vincenzo Pusino, David R.S. Cumming   +5 more
wiley   +1 more source

Heterolayered Carbonized MXene/Polyimide Aerogel for Low-Reflection Electromagnetic Interference Shielding and Multi-Spectrum Compatible Protection. [PDF]

Nanomicro Lett
Zhang S, Liang CM, Zhou L, Wu J, Koo MC, Wu Z, Chen YT, Wang GS.   +7 more
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

Graphene based terahertz MIMO antenna with machine learning regression for 6G communications. [PDF]

Sci Rep
Haque MA, Akhter MS, Das I, Zaman TU, Tiang JJ, Singh NSS, Algarni AD, Ateya AA.   +7 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

Terahertz integrated sensing and mobile communications empowered by a 220-GHz-band portable device. [PDF]

Nat Commun
Wang G, Li M, Liu Q, Zang J, Li O, Du X, Xu L, Tao M, Han C.   +8 more
europepmc   +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

Non-destructive inspection of oil-water two-phase systems by terahertz optoacoustics. [PDF]

Photoacoustics
Yao Y, Zhang C, Du K, Wang K, Li J, Tian Z, Zhang W.   +6 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