Results 161 to 170 of about 27,154 (242)

Polarization-Insensitive Electro-Optic Modulator for the Terahertz Regime Enabled by a Graphene-Hybrid Plasmonic Waveguide. [PDF]

Nanomaterials (Basel)
Zhou X, Liu C, Li Y, Weng T, Tan Q, Huang X, Pan J.   +6 more
europepmc   +1 more source

Deep‐UV Photonic Crystal Surface‐Emitting Lasers

Laser &Photonics Reviews, EarlyView.
The first deep‐UV photonic crystal surface‐emitting lasers (PCSELs) at 279 nm are demonstrated under pulsed optical pumping. The PCSELs have single‐mode emission with a 17‐pm linewidth and a divergence angle of less than 1∘$^{\circ }$. Experimental results highlight the impact of the filling factor choice on the lasing mode and the far‐field emission ...
Doğukan Apaydın, Hjalmar Andersson, Lukas Uhlig, Sarina Graupeter, Joachim Ciers, Giulia Cardinali, Erik Strandberg, Tim Wernicke, Michael Kneissl, Ulrich Theodor Schwarz, Philippe Tassin, Åsa Haglund   +11 more
wiley   +1 more source

Simplified aluminum nitride processing for low-loss integrated photonics and nonlinear optics. [PDF]

Npj Nanophoton
Yan H, Zhang S, Pal A, Ghosh A, Alabbadi A, Kheyri M, Bi T, Zhang Y, Harder I, Ohletz O, Gannott F, Gumann A, Butzen E, Ludwig K, Del'Haye P.   +14 more
europepmc   +1 more source

Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation

Laser &Photonics Reviews, EarlyView.
Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley   +1 more source

Shape-morphable origami electromagnetic waveguides. [PDF]

Commun Eng
Ashok N, Suk S, Bilén SG, Ning X.
europepmc   +1 more source

Broadband Mode Converter With Customizable Modal Ratio Leveraging Subwavelength Engineering for Advanced Multimode Silicon Photonics

Laser &Photonics Reviews, EarlyView.
This work introduces a customizable mode converter for multimode silicon photonics, enabling precise control over the conversion ratio between optical modes. The device operates across a broad wavelength range (1350–1700 nm) with 15 distinct conversion levels.
Raquel Fernández de Cabo, Alejandro Sánchez‐Sánchez, Paula Nuño Ruano, Roy Ronald Prosopio Galarza, Daniele Melati, Carlos Alonso‐Ramos, Aitor V. Velasco, David González‐Andrade   +7 more
wiley   +1 more source

Towards fibre-like loss for photonic integration from violet to near-infrared. [PDF]

Nature
Chen HJ, Colburn K, Liu P, Yan H, Hou H, Ge J, Liu JY, Lehan P, Ji QX, Yuan Z, Bouwmeester D, Holmes C, Gates J, Blauvelt H, Vahala K.   +14 more
europepmc   +1 more source

Enhancement and Speed‐Up of Carrier Dynamics in A Dielectric Nanocavity with Deep Sub‐Wavelength Confinement

Laser &Photonics Reviews, EarlyView.
This work presents the first experimental investigation of ultrafast dynamics in dielectric bowtie nanocavities, featuring deep‐subwavelength mode confinement. Measurements reveal enhanced two‐photon absorption, sub‐picosecond carrier relaxation, and strong pump–probe interactions, demonstrating clear advantages over conventional nanocavities for low ...
Gaoneng Dong, Ali Nawaz Babar, Rasmus Ellebæk Christiansen, Søren Engelberth Hansen, Søren Stobbe, Yi Yu, Jesper Mørk   +6 more
wiley   +1 more source