Results 191 to 200 of about 5,043,066 (255)

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Advances in Technology and Applications of Optical Sensing and Imaging for Biomedicine: introduction. [PDF]

Biomed Opt Express
Yuan W, Meng G, Baran TM.
europepmc   +1 more source

Single‐Lens Counter‐Focused Ultrashort Laser Pulses for Enhanced Microplasma Formation Inside Silicon

Laser &Photonics Reviews, EarlyView.
A polarization‐dependent liquid–crystal spatial light modulator is used to generate coaxial double‐focus laser beams with independently tunable focal separation and intensity. Applied to silicon, this configuration enables counterpropagating pulse interactions using a single focusing element, enhancing nonlinear excitation and achieving near‐critical ...
Niladri Ganguly, David Grojo, Pol Sopeña   +2 more
wiley   +1 more source

A broadband lithium tantalate-on-silicon nitride heterogeneous modulator for optical and terahertz communications and radar sensing. [PDF]

Nat Commun
Su J, Yuan Y, Dai Y, Sun A, Ran S, Gao W, Liu W, Liu Y, Lu L, Zhang J, Zeng C, Dong B, Li Y, Chi N, Xia J, Chen J, Zhou L.   +16 more
europepmc   +1 more source

Leaky Topological Edge State Cavities for On‐Chip Terahertz Sensing

Laser &Photonics Reviews, EarlyView.
Engineering radiation leakage in topological edge state cavities (TESCs) turns a conventional loss channel into a resource for enhancing on‐chip terahertz‐matter interactions. Tailoring the radiation leakage of a valley photonic crystal produces guided TESC with loaded Q factors up to 14 148 and leaky TESC with 2.2‐fold higher sensitivity, reaching 150.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Chip‐Scale Terahertz Sensing Driven by Supercoupling Induced Transparency in Topological Cavities

Laser &Photonics Reviews, EarlyView.
Supercoupling‐induced transparency (SIT) in topological cavities enables sensitive terahertz sensing on a chip. Strong field confinement and slow light response enhance interactions with thin films, enabling thickness detection through resonance shifts and group delay changes.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Beam manipulation for terahertz communications. [PDF]

Commun Eng
Li M, Jornet JM, Mittleman DM, Han C.
europepmc   +1 more source

PARCE: Accurate Inference of Crystal Structure Information From Phonon Vibrational Modes

Materials Genome Engineering Advances, EarlyView.
In this work, we introduce a multidescriptor framework and accuracy‐adaptive ensemble network to classify over 30,000 crystals from phonon and Raman data, achieving > 60% accuracy across diverse structures. Our work reduces reliance on ideal XRD data, enabling automated and large‐scale material structure analysis.
Hongyu Chen, Mengyu Dai, Hongjiang Chen, Ruilin Liu, Xiaole Tian, Ruixiao Lian, Yuqian Zhang, Liujiang Zhou, Wenwu Li, Xia Cai, Hao Zhang   +10 more
wiley   +1 more source

Unraveling the Mechanism for Phonon Based Heat Transport in Metal‐Organic Frameworks

Small, EarlyView.
Heat transport in metal‐organic frameworks arises from an interplay between particle‐like phonon propagation and wave‐like inter‐band coupling. Using machine‐learned potentials within a unified phonon‐transport framework based on the Wigner transport theory, we reveal how differences in phonon lifetimes and phonon tunneling effects determine the ...
Florian P. Lindner, Marco Moser, Lukas Legenstein, Sandro Wieser, Egbert Zojer   +4 more
wiley   +1 more source

Optical and Photonic Materials: From Passive Media to Tunable, Engineered, and Application-Driven Platforms. [PDF]

Materials (Basel)
Wei R, Zhang W.
europepmc   +1 more source