Results 111 to 120 of about 329,754 (334)

Observation of anti-PT-symmetry and higher-order exceptional point PT-symmetry in ternary systems for single-mode operation

Scientific Reports
Nowadays, topological parity-time (PT) and anti- parity-time (APT) symmetry systems have attracted substantial attention due to their noticeable features and specific applications.
Milad Jahangiri, Gholam-Mohammad Parsanasab, Leila Hajshahvaladi   +2 more
doaj   +1 more source

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

Advanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia, Yuming Zhao, Meitong Nie, Benjamin Pittelkau, Aditya Garg, Junyeob Song, Wenqi Zhu, Henri Lezec, Amit Agrawal, Wei Zhou   +9 more
wiley   +1 more source

Topologically integrated photonic biosensor circuits [PDF]

arXiv
Integrated nanophotonic biosensors offer a promising route toward future biomedical detection applications that may enable inexpensive, portable, and sensitive diagnosis of diseases with a small amount of biological samples for convenient early-stage screening of fatal diseases.
arxiv  

A Homeostatic Photonic Device Integrating Vapor‐Regulated Thermo‐Optical Feedback Mechanisms

Advanced Functional Materials, EarlyView.
An inorganic homeostatic photonic device is designed to autonomously regulate light, temperature, and vapor sorption through integrated positive and negative feedback mechanisms at multiple wavelengths. The device uses a graded mesoporous 1D photonic crystal coupled with a photothermal layer.
Caroline Byun, Davide R. Ceratti, Clémence Mimoso, Cédric Boissière, Marco Faustini   +4 more
wiley   +1 more source

Single-photon stimulated four wave mixing at telecom band [PDF]

arXiv, 2016
Single-photon stimulated four wave mixing (StFWM) processes have great potential for photonic quantum information processing, compatible with optical communication technologies and integrated optoelectronics. In this paper, we demonstrate single-photon StFWM process in a piece of optical fiber, with seeded photons generated by spontaneous four wave ...
arxiv  

Tailoring Hole‐Blocking Layers Enables a Versatile Approach for Fast Photomultiplication‐Type Organic Photodetectors

Advanced Functional Materials, EarlyView.
This study investigates the role of hole‐blocking layers (HBLs), particularly the combination of two HBLs in photomultiplication‐type organic photodetectors (PM‐OPDs), which results in high gain and record‐fast response. The proposed HBL strategy also allows for the use of photoactive layer with balanced donor–acceptor stoichiometry, which can be ...
Awais Sarwar, Yazhong Wang, Louis Conrad Winkler, Tianyi Zhang, Jonas Schröder, Donato Spoltore, Karl Leo, Johannes Benduhn   +7 more
wiley   +1 more source

Demonstration of high-frequency self-pulsing oscillations in an active silicon micro-ring cavity

Scientific Reports
We experimentally investigated the self-pulsing (SP) oscillations induced by the thermo-optic, free carrier, and Kerr nonlinear effects in integrated active silicon microring resonators.
Abdou Eltamimy Shetewy, Mircea Traian Catuneanu, Menglong He, Kambiz Jamshidi   +3 more
doaj   +1 more source

3D Nano‐architected Polymer Shell Enables Reconfigurable Stabilized Blue Phase Soft Crystals

Advanced Functional Materials, EarlyView.
Spherical polymer shells featuring nanostructure of blue phase (BP) disclinations form via in situ photo‐polymerization within BP liquid crystals, providing controlled anchoring for BP nucleation and growth at room temperature and beyond. This architected confinement enhances BP thermal stability over a broad temperature range while enabling dynamic ...
Sepideh Norouzi, Yazael R. Morales‐Flores, Tadej Emersic, Jeremy Money, Otilio E. Rodriguez‐Lopez, Andrew Casale, Juan J. de Pablo, Jose A. Martinez‐Gonzalez, Monirosadat Sadati   +8 more
wiley   +1 more source

Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity

Communications Physics
Harnessing non-spatial properties of photons as if they represent an additional independent coordinate underpins the emerging synthetic dimension approach.
Hiep X. Dinh, Armandas Balčytis, Tomoki Ozawa, Yasutomo Ota, Guanghui Ren, Toshihiko Baba, Satoshi Iwamoto, Arnan Mitchell, Thach G. Nguyen   +8 more
doaj   +1 more source

Monolithically Integrated Ge-on-Si Active Photonics

Photonics, 2014
Monolithically integrated, active photonic devices on Si are key components in Si-based large-scale electronic-photonic integration for future generations of high-performance, low-power computation and communication systems.
Jifeng Liu
doaj   +1 more source