Results 181 to 190 of about 51,007 (269)

A dynamically tunable terahertz human serum albumin biosensor based on Dirac semimetal nanozyme. [PDF]

Front Bioeng Biotechnol
Chen L, Yao Q, Chen J, Peng Y, Xu J, Fu Q.   +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

Dynamic dual-mode terahertz device with nonvolatile switching for integrated on-chip and free-space applications. [PDF]

Microsyst Nanoeng
Dong Y, Chen X, Zhang S, Wang Z, Li H, Liu K, Xu G, Xu Q, Li Q, Ouyang C, Cao T, Tian Z.   +11 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

Manipulating terahertz phonon-polariton in the ultrastrong coupling regime with bound states in the continuum. [PDF]

Light Sci Appl
Yang J, Zhang L, Wang K, Zhang C, Fan A, He Z, Li Z, Han X, Ling F, Lu P.   +9 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

Broadband Three-Mode Tunable Metamaterials Based on Graphene and Vanadium Oxide. [PDF]

Nanomaterials (Basel)
Wen H, Wang S, Cai Y, Zou Z, Qin Z, Gao T.   +5 more
europepmc   +1 more source

Terahertz waves and applications

, 2021
openaire   +1 more source

Laser Stabilized to a Fiber Interferometer With Close‐To‐Zero Temperature Sensitivity

Laser &Photonics Reviews, EarlyView.
A laser stabilized to a hollow‐core fibre interferometer is presented. The interferometer is designed to have near‐zero temperature phase‐sensitivity. Laser stabilized to this interferometer put in a non‐vacuum environment achieves ±550 kHz frequency variation over 100 h and an Allan deviation of 2 × 10−14τ, which is comparable to miniature ULE ...
Bo Shi, Irene Barbeito Edreira, Meng Ding, Zitong Feng, Win Indra, Francesco Poletti, Giuseppe Marra, Radan Slavík   +7 more
wiley   +1 more source

A tunable graphene terahertz sensor with high sensitivity and figure of merit for refractive index biosensing. [PDF]

Sci Rep
Abdollahvand M, Azadi AH, Ebrahimifard A, Heidarzadeh H.   +3 more
europepmc   +1 more source