Results 241 to 250 of about 16,697 (297)

Topological Photonic Devices and Circuits at Terahertz Frequencies

Laser &Photonics Reviews, EarlyView.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor, Srabani Kar, Ranjan Singh, Kaveh Delfanazari   +3 more
wiley   +1 more source

High pump depletion second-harmonic generation using domain engineered thin-film lithium niobate waveguides. [PDF]

Nanophotonics
Wang C, Chen M, Tian XH, Gu Z, Tang J, Zhang Y, Wang Z, Jia K, Shi C, Gu X, Qian G, Wang Z, Zhu SN, Xie Z.   +13 more
europepmc   +1 more source

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Laser &Photonics Reviews, EarlyView.
The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen, Wenhao Wang, Yi Ji Tan, Zhonglei Shen, Ridong Jia, Ranjan Singh   +5 more
wiley   +1 more source

Nonlinear Resonance Modulation in Single‐Crystalline VO2‐Integrated Si Ring Resonator

Laser &Photonics Reviews, EarlyView.
This work first demonstrates a single‐crystalline VO2–Si hybrid ring resonator. The epitaxial lift‐off process enables high‐quality VO2 integration on the dissimilar Si photonic platform. The high‐quality VO2 film exhibits exceptional nonlinear resonance modulation and a steep optical transition across the metal‐insulator transition. ABSTRACT The metal‐
Sebae Park, Dong Kyu Lee, Junyeop Kim, Sungwon Lee, Heedeuk Shin, Junwoo Son   +5 more
wiley   +1 more source

Nanodomain poling unlocking backward nonlinear light generation in thin film lithium niobate. [PDF]

Nanophotonics
Sabatti A, Kellner J, Chapman RJ, Grange R.   +3 more
europepmc   +1 more source

Waveguide-Based Characterization of Magnetically-Biased Soft Ferrites for Nonreciprocal Devices at Sub-THz Frequencies

S. Hossein Hosseini Buiki, Mehrdad Rezaei Golghand, Mohammad Memarian, B. Rejaei, Joachim Oberhammer   +4 more
openalex   +2 more sources

Resonant X‐Ray Diffraction of Conjugated Polymers at the Selenium K‐Edge

Macromolecular Rapid Communications, EarlyView.
Analogous to isomorphous replacement used in X‐ray crystallography studies of proteins, substituting sulfur for selenium in conjugated polymers enables resonant diffraction studies of molecular packing down to the length scale of π‐‐π stacking. Two selenium‐containing polymers are studied with a comparison made between sulfur K‐edge and selenium K‐edge
Guillaume Freychet, Nigel Kirby, Matthew Gebert, Yun‐Hi Kim, Qiao He, Martin Heeney, Christopher R. McNeill   +6 more
wiley   +1 more source

Microfluidic-Integrated, Ring-Resonator-Assisted Mach-Zehnder Interferometer (μFRA-MZI) as a Label-Free Nanophotonic Sensor. [PDF]

Biosensors (Basel)
Chang Y, Seutter EG, Wang Z, Wan J.
europepmc   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama, Marina Murillo‐Arcila, Julio Puerta‐Fernández   +2 more
wiley   +1 more source