Mathematical method for designing phase-shifted fiber Bragg gratings for nanoscale strain measurement in high-stability satellite structures [0.03%]
用于高稳定性卫星结构纳米应变测量的相移型光纤布拉格光栅的设计方法研究
Zaibo Cheng,Wenxuan Li,Runduo Song et al.
Zaibo Cheng et al.
Phase-shifted fiber Bragg gratings (PSFBGs) are promising for in-orbit nanoscale strain monitoring in high-stability satellite structures. However, conventional designs are constrained by a fundamental tradeoff between high strain resolutio...
Two-axis electromagnetic fast steering MEMS micromirror with a 10-mm-large aperture for satellite communications [0.03%]
一种大孔径二维电磁快速转向微机电系统MEMS反射镜用于卫星通信
Menglin Chen,Chenyao Zhu,Yingchao Cao et al.
Menglin Chen et al.
Microelectromechanical system (MEMS) technology has been exploited to miniaturize fast steering mirrors (FSMs) for free space laser communications between satellites. However, fast steering MEMS mirrors (FSMMs) face tradeoffs among the opti...
Numerical super-oscillatory filtering for sub-diffraction optical imaging [0.03%]
数值超振荡滤波在次衍射光学成像中的应用
Yitian Liu,George V Eleftheriades
Yitian Liu
Super-oscillatory (SO) imaging is a far-field imaging technique to super-resolve unlabeled objects. Previous theoretical and simulation-based studies have shown attractive possibilities to simplify the SO imaging configuration by implementi...
Qing Yan,Lei Yu,Liwei Wang et al.
Qing Yan et al.
An ultrabroad instantaneous frequency measurement (IFM) scheme based on a Brillouin fiber laser (BFL) is proposed and experimentally demonstrated. The BFL is constructed using a Mach-Zehnder intensity modulator and an unpumped erbium-doped ...
Over 100 million Q silicon nitride Fabry-Perot Bragg nanoresonators enabled by advanced tapered gratings [0.03%]
一种基于先进锥形光栅的千万量级氮化硅法布里-珀罗纳米谐振腔的制造技术
Yang Zhang,Masoud Heidari Khouzani,ChengDao Yu et al.
Yang Zhang et al.
We report new, to the best of our knowledge, advances in Fabry-Perot Bragg grating nanoresonators on low-loss silicon nitride (Si3N4). Building on a previous demonstration of an intrinsic quality factor Qin of 19.3 million with 1.4 dB/m pro...
End-to-end neural refocusing with Fourier slice constraints for fast light-field hologram generation [0.03%]
基于傅立叶切片约束的端到端全息神经渲染方法
Wenqi Wang,Sen Liu,Yijia Chen et al.
Wenqi Wang et al.
A holographic display enables three-dimensional scene reconstruction, but conventional methods suffer from high computational cost and artifacts in multi-depth scenes. We propose an end-to-end light-field hologram generation framework that ...
Remote displacement sensing by decoupling a compact sensing head from a heterodyne Michelson interferometer [0.03%]
解耦合的异频迈克尔逊干涉仪远距位移传感方法
Johannes Bäuerlein,Jonathan Joseph Carter,Gerhard Heinzel et al.
Johannes Bäuerlein et al.
Interferometric displacement sensors offer unparalleled sensitivity for measuring the motion of masses. Careful design of the optical layout is needed to make the sensor resistant to typical noise sources and have compact sensing elements. ...
Wave and ray optics simulation studies of long-exposure incoherent imaging in atmospheric turbulence [0.03%]
大气湍流下的长曝光无序成像的波动和几何光学模拟研究
Haoxin Tian,Hanyu Zhan,David Voelz et al.
Haoxin Tian et al.
This study provides both qualitative and quantitative comparisons of wave and ray optics simulations for long-exposure incoherent imaging in weak to strong atmospheric turbulence. The ray tracing image shows a recognizable approximation to ...
Khalil Sabour,Yaroslav V Kartashov
Khalil Sabour
We introduce higher-order polariton topological insulator (HOTI) realized with a fractal array of microcavity pillars arranged into Sierpiński gasket-like geometry. This system, exhibiting self-similarity in different generations, can supp...
Direct generation of high-average-power mid-infrared cylindrical vector pulses from a simple polarization-maintaining fiber laser [0.03%]
一种简单保偏光纤激光器直接产生高平均功率中红外椭圆矢量脉冲的新方法
Yushuo Bao,Yuntian Tong,Mavra Farrukh et al.
Yushuo Bao et al.
We demonstrate watt-level average power mode-locking operations in a simple linear-cavity polarization-maintaining (PM) Er:ZBLAN fiber laser at ~2.78 µm, generating ultrafast pulses for both linearly polarized (LP) and cylindrical vector b...