Results 61 to 70 of about 24,572 (253)

Toward Highest Frequency, Phase‐Sensitive Electric Field Sensing Enabled by Plasmonic Circuits

Laser &Photonics Reviews, EarlyView.
An electromagnetic field sensor using an optical sensor head for distortion‐free, high‐sensitivity measurements with potential for high‐frequency operation is presented. The frequency response is enabled by an antenna‐integrated plasmonic modulator. The sensitivity is calculated, and optimizations to obtain thermal‐background‐limited sensitivity are ...
Michael Baumann, Hande Ibili, Boris Vukovic, Tobias Blatter, Jasmin Smajic, Juerg Leuthold   +5 more
wiley   +1 more source

Shock Angle Characteristics and Test Analysis of Hypersonic Wide-Speed-Range Cruise Aircraft

Aerospace
Hypersonic aircraft represent a cutting-edge technology in aerospace engineering, where the shock angle serves as a critical aerodynamic parameter. However, existing studies remain limited by significant prediction errors for the shock angle.
Shuailong Gao, Kunming Jia, Shaojie Ma, Zhiyuan Ai   +3 more
doaj   +1 more source

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, EarlyView.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

Loop Quantum Photonic Chip for Coherent Multi‐Time‐Step Evolution

Laser &Photonics Reviews, EarlyView.
A loop quantum photonic chip (Loop‐QPC) enabling efficient multi‐step quantum simulation in a single run is demonstrated. Combining recirculating loops with cycle‐or‐measure control, Loop‐QPC eliminates repeated reprogramming and reduces loss. Experimental demonstration of three‐step unitary evolution confirms high‐fidelity operation, showcasing the ...
Yuancheng Zhan, Hui Zhang, Rebecca Erbanni, Andreas Burger, Lingxiao Wan, Xudong Jiang, Sanghoon Chae, Ai Qun Liu, Dario Poletti, Leong Chuan Kwek   +9 more
wiley   +1 more source

Improving Euler Computations at Low Mach Numbers [PDF]

International Journal of Computational Fluid Dynamics, 1996
This paper consists of two parts, both dealing with conditioning techniques for low-Mach-number Euler-flow computations, in which a multigrid technique is applied. In the first part, for subsonic flows and upwind-discretized linearized 1-D Euler equations, the smoothing behavior of multigrid-accelerated point Gauss-Seidel relaxation is investigated ...
openaire   +2 more sources

Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response

Laser &Photonics Reviews, EarlyView.
A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng, Yu Zhang, Xiangfeng Chen, Wim Bogaerts   +3 more
wiley   +1 more source

Three‐Dimensional Optical Characterization of Magnetostrictive Deformation in Magnomechanical Systems

Laser &Photonics Reviews, EarlyView.
An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu, Jing Zhang, Jie Li, Rongguo Yang, Jiangrui Gao, Tiancai Zhang   +5 more
wiley   +1 more source

Research on Refined Design Method for Large-Diameter Hypersonic Nozzle Contours

Aerospace
With the advancement of aerospace technology, full-scale wind tunnel testing has become a crucial approach to overcoming bottlenecks in hypersonic technology.
Chenxi Sun, Huiqi Ren, Zailin Yang, Renjie Wang   +3 more
doaj   +1 more source

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

Laser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė, Hsin‐Hui Huang, Haoran Mu, Nguyen Hoai An Le, Tomas Katkus, Edvinas Aleksandravičius, Gabrielius Kontenis, Domas Paipulas, Saulius Juodkazis, Darius Gailevičius   +9 more
wiley   +1 more source

A Study of the Complex Flow Features Behind a Diffracted Shock Wave on a Convex Curved Wall

Journal of Applied Fluid Mechanics, 2015
The complex flow features behind a diffracted shock wave on a convex curved wall is investigated using large scale experimentation complemented by numerical computation.
adam muritala, B. Skews, craig law
doaj