Scalable, polarization-insensitive broadband nonlinear metasurfaces for weak-light applications [0.03%]
用于弱光应用的可扩展宽带非线性手性超表面
Yiwen Guo,Junxian Deng,Yu Gao et al.
Yiwen Guo et al.
In this work, we develop an ITO-based metasurface integrated with disordered silver nanoparticles (DSNPs). The localized plasmon resonance of the DSNPs couples and confines incident light within the ITO layer, enabling strong nonlinear resp...
Mid-infrared chirped fiber Bragg gratings inscribed in fluorotellurite fiber using a femtosecond laser [0.03%]
用于氟碲酸盐光纤的飞秒激光写入的中红外宽带光纤布拉格光栅
Shanren Liu,Qian Zhang,Qi Guo et al.
Shanren Liu et al.
In this paper, chirped fiber Bragg gratings (CFBGs) with tunable parameters are successfully fabricated in fluorotellurite fiber (FTF) using the femtosecond laser point-by-point method combined with slit beam shaping technique. By precisely...
Observation of tuning properties in a continuous- wave doubly resonant backward optical parametric oscillator [0.03%]
连续波双共振背向光学参量振荡器的调谐性能观测
Ming-Yuan Gao,Yue-Wei Song,Zhi-Cheng Guo et al.
Ming-Yuan Gao et al.
Doubly resonant optical parametric oscillators (OPOs) under continuous-wave (CW) pumping are particularly notable for their low threshold and narrow linewidth. Backward OPOs (BOPOs) realized through backward quasi-phase matching, which exhi...
Davide Baiocco,Ignacio Lopez-Quintas,Javier R Vázquez de Aldana et al.
Davide Baiocco et al.
In this Letter we report the demonstration of the first cyan Pr-based waveguide laser, fabricated inscribing depressed-cladding waveguides in Pr:Ba(Y0.8Lu0.2)2F8 by direct femtosecond laser writing. With an optimized waveguide geometry for ...
Single-shot multi-wavelength imaging over scattering media enabled by deep learning [0.03%]
基于深度学习的散射介质中单次多波长成像技术
Wenwen Li,Tuqiang Pan,Jiayi Yang et al.
Wenwen Li et al.
Deep learning enables high-fidelity speckle imaging over scattering media in a single-shot manner. However, extending it to multi-wavelength scenarios remains challenging because coherent interference and dispersion effects complicate the t...
Lock-in infrared illumination for high-resolution microscopic thermal imaging [0.03%]
一种锁相红外照明技术实现高分辨率显微热成像
Anjanashree M R Sharma,Kristof J P Jacobs,Ingrid de Wolf
Anjanashree M R Sharma
Infrared (IR) thermal imaging at ambient temperature using conventional IR cameras often faces challenges such as reduced image contrast and elevated noise levels, restricting its application in high-resolution microscopic imaging. In this ...
Tailoring polarization singularities in degenerate bands through structural symmetry and magnetic field [0.03%]
通过结构对称性和磁场在退化带中调整偏振奇点
Xingchen Zhao,Xiangke Li,Shanqi Yang et al.
Xingchen Zhao et al.
Polarization singularities have attracted considerable interest in photonic crystals (PhCs) due to their high quality factor and selective response to circularly polarized light. In this work, we propose a strategy to manipulate the evoluti...
Metalens-assisted wide-angle dynamic holography for 3D full-color display [0.03%]
用于全彩显示的金属透镜辅助大角度动态全息术
Yuze Lu,Jun He,Hengyi Wang et al.
Yuze Lu et al.
Current dynamic holographic display has a limited field of view (FOV) due to large pixel pitches of reconfigurable devices such as spatial light modulators (SLMs) and digital micro-mirror devices (DMDs). Despite various efforts to develop F...
Optical enantiomer sorting via background-particle electromagnetic matching [0.03%]
基于背景粒子电磁匹配的光学对映体分离
Xu Yuan,Menglong Lu,Huajin Chen et al.
Xu Yuan et al.
The performance of all-optical chirality-sorting systems is fundamentally governed by the competition between enantioselective chiral optical forces and non-discriminatory non-chiral forces. In this Letter, we demonstrate a background-parti...
Automatically starting, flat-top electro-optic frequency comb based on photonic sampling [0.03%]
基于光电取样的自动化起始平板顶光学频率梳
Yaowen Zhang,Hansen Dong,Junji Chen et al.
Yaowen Zhang et al.
An approach is proposed and demonstrated to realize automatically starting, flat-top electro-optic frequency comb (EOFC) generation utilizing cascaded electro-optic modulation based on a Mach-Zehnder modulator (MZM) and multiple phase modul...