Optical encryption-transmission via computational ghost imaging and fractional OAM multiplexing [0.03%]
基于分数轨道角动量多路复用和计算鬼成像的光学加密传输
Kuihao Zhang,Jixin Qiu,Zinan Huang et al.
Kuihao Zhang et al.
This paper proposes a solution that combines computational ghost imaging (CGI), fractional orbital angular momentum (FOAM), and deep learning for the secure encryption and transmission of optical images. In the information collection and en...
Generation of gigahertz-repetition-rate femtosecond vortex beams by an optical parametric oscillator [0.03%]
采用光学参量振荡器产生吉赫兹重复频率飞秒涡旋光脉冲序列
Hui Tong,Yue Shi,Hua Wang et al.
Hui Tong et al.
The generation of GHz-repetition-rate femtosecond vortex beams is reported for the first time, to the best of our knowledge. A self-developed GHz-repetition-rate Kerr-lens mode-locked Yb:CYA laser was used to pump an optical parametric osci...
Photonic molecules via coupled thin-film lithium niobate Fabry-Pérot photonic crystal micro-resonators [0.03%]
基于薄膜铌酸锂耦合法布里-珀罗型光子晶体微腔的光子分子
Hyeon Hwang,Seokjoo Go,Guhwan Kim et al.
Hyeon Hwang et al.
We demonstrate a photonic molecule platform based on photonic crystal (PhC) Fabry-Pérot micro-resonators on thin-film lithium niobate, featuring standing-wave resonances confined between PhC mirrors. By adjusting the number of PhC unit cel...
Elizabeth K Benitez,Yashas Khattar,Matthew P Borg
Elizabeth K Benitez
Self-aligned focusing schlieren (SAFS) is a relatively new diagnostic that has proven particularly useful in the field of hypersonic aerodynamic experimentation. A modification of the SAFS technique is proposed to automatically sweep throug...
Time-gated Raman spectroscopy using a 3D-stacked back-side illuminated CMOS SPAD array [0.03%]
基于三维堆叠背照式CMOS SPAD阵列的时间门控拉曼光谱技术
Gillian E Brown,Andrew B Matheson,Yuanyuan Hua et al.
Gillian E Brown et al.
Atlas is a 128 × 128-pixel array, consisting of 512 × 512 back-side illuminated (BSI) single photon avalanche diodes (SPADs) in 3D-stacked 65/40 nm CMOS technology. On-pixel auto-correlator and single photon counting capabilities have bee...
Jonah M Theisen,Erik M Grumstrup
Jonah M Theisen
An interferometric pump-probe microscope with two counterpropagating probe beams is developed and characterized. Application of the technique to a porphyrin derivative thin film shows that the technique is sensitive to variations in local f...
Uncertainty-aware physics-informed high-fidelity ghost imaging in ambient illumination [0.03%]
基于物理的高保真鬼成像的不确定性awareness及其在环境照明中的应用
Qi Li,Guancheng Huang,Yutong Li et al.
Qi Li et al.
Ghost imaging excels in extreme conditions owing to its exquisite sensitivity and adaptability, yet ambient-light perturbations disrupt the masks and compromise reconstruction fidelity. We propose an uncertainty-aware physics-informed frame...
Pulsed laser-induced water surface elevation and its relationship to the Abraham momentum [0.03%]
激光照射下水面抬升效应及与爱因斯坦 Abraham 动量的关系研究
Gopal Verma,Iver Brevik,Wei Li
Gopal Verma
We present a theoretical framework to address the challenge of modelling the liquid surface deformation under pulsed laser illumination for normal and oblique incidence, a key bottleneck in linking optical forces with fluid dynamics. This m...
Third-order nonlinearity-enabled ultrafast photonic diode based on a SnS&CAS tandem absorber [0.03%]
基于SnS&CAS串联吸收器的三阶非线性超快光子二极管
Feng Zhang,Qiao Lu,Xiaohe Zhang et al.
Feng Zhang et al.
In this work, we developed a high-speed photonic diode based on third-order nonlinearity of tin sulfide nanosheets (SnS NSs) and copper antimony sulfide quantum dots (CAS QDs). The transmission characteristics of this photonic diode are sim...
Yan Liu,Jing Han,Jinjia Guo et al.
Yan Liu et al.
Precise reconstruction of scattered fields remains a challenge. Here, we report a nonlinear approach via broadband modulation instability in co-doped polymers. Theoretical analysis and experimental observation show that the complementary ac...