A5025338804- Advanced Fiber Laser Technologies
- Nonlinear Photonic Systems
- Nonlinear Waves and Solitons
- Optical Coatings and Gratings
- Cold Atom Physics and Bose-Einstein Condensates
- Optical Polarization and Ellipsometry
- Laser-Matter Interactions and Applications
- Advanced Optical Sensing Technologies
- Surface Roughness and Optical Measurements
- Photonic Crystals and Applications
- Atomic and Subatomic Physics Research
- Photonic and Optical Devices
- Neurobiology and Insect Physiology Research
- Orbital Angular Momentum in Optics
- Gut microbiota and health
- Advanced Measurement and Metrology Techniques
- Force Microscopy Techniques and Applications
- Visual perception and processing mechanisms
- Metamaterials and Metasurfaces Applications
- Optical Systems and Laser Technology
- Advanced Fluorescence Microscopy Techniques
- Plasmonic and Surface Plasmon Research
- Coral and Marine Ecosystems Studies
- Advanced Antenna and Metasurface Technologies
- Advanced Electron Microscopy Techniques and Applications
Shenzhen University
2021-2024
Changchun University of Science and Technology
2015-2018
High spatial resolution on the image plane (intrinsic resolution) has always been a problem for ultrafast imaging. Single-shot imaging methods can achieve high object through amplification systems but with low intrinsic resolutions. We present frequency domain integration sequential (FISI), which encodes transient dynamic by an inversed 4f (IFF) system and decodes it using optical frequencies recognition (OFR), overcomes limitation of algorithm. In experiment process air plasma channel, FISI...
Atomic time scale imaging, opening a new era for studying dynamics in microcosmos, is presently attracting immense research interest on the global level due to its powerful ability. On atom level, physics, chemistry, and biology are identical researching motion atomic state change. The light possesses twoness, information carrier resource. most fundamental principle of this imaging that records event-modulated field by itself, so-called all-optical imaging. This paper can answer what...
Reflection loss on the optical component surface is detrimental to performance. Several researchers have discovered that eyes of moths are covered with micro- and nanostructured films reduce broadband wide-angle light reflection. This research proposes a new type moth-eye subwavelength structure waist, which equivalent gradient refractive index film layer high–low–high hyperbolic-type fill factor distribution. The diffraction order characteristics first analyzed using rigorous coupled wave...
A novel single-shot ultrafast all-optical photography with raster principle (OPR) that can capture real-time imaging of phenomena is proposed and demonstrated. It consists a sequentially timed module (STM), spectral-shaping (SSM), framing camera (RFC). STM SSM are used for linearly encoding frequency-time mapping system calibration, respectively. The function the RFC sampling target by microlens arrays on basis frequency-time-spatial positions conversion. We demonstrated recording transient...
Dark solitons and localized defect modes against periodic backgrounds are considered in arrays of waveguides with defocusing Kerr nonlinearity constituting a nonlinear lattice. Bright supported by local increase the nonlinearity, while dark decrease nonlinearity. exist for both types defect, although case weak they feature side bright humps making total energy propagating through system larger than transferred constant background. All found stable. characterized relatively narrow windows...
Measuring the polarization state of light is an inherent problem, especially for detection circularly polarized light. We propose a metasurface structure based on graphene to investigate circular function in THz regime by using finite difference time domain (FDTD) method. The proposed consists layer arrays, polymer dielectric spacer, and bands. By adjusting Fermi energy, can realize tunable functions. On this basis, we combine filters with different angles into achieve full Stokes parameter...
This study investigated a novel polarisation detection model based on the microstructure of rhabdom in mantis shrimp eyes, which single unit can detect two directions orthogonal polarisation. The bionic incorporated multi-layered Si wire grids, and finite-difference time-domain method was used to simulate light absorption. A single-layer grid simulated effects thickness duty cycle extinction ratios. multi-layer distance between adjacent layers. simulations revealed that achieve detection....
Mantis shrimp eyes possess apposition compound eyes, complex visual systems, and unique ability of polarization identification.Within row 5 6 in the mid-band mantis arrangement microvilli retina cells (R1-8) provides possibility identification.This paper analyses structure rhabdome ommatidia.According to birefringence layer R8 cells, alternate layers R1-7 was simulated by calculating method index ellipsoid can be simplified a cuboid-shaped uniaxial crystal which optical axis is parallel...
In view of the light energy loss in central obscuration coaxial reflex optical system, design method a kind hollow beam generator is introduced. First all, according to geometrical parameter and ratio front-end calculate required physical dimension beam, get expanding rate parameters source. Choose better enlargement initial system using relational expression system; traditional used then position rotation axis can be obtained through translation formula. Intercept bus bar after translation,...
Atomic time scale imaging, opening a new era for studying dynamics in microcosmos, is presently attracting immense research interesting on the global level due to its powerful ability. On atom level, physics, chemistry, and biology are identical researching motion atomic state change. The light possesses twoness, information carrier resource. most fundamental principle of this imaging that records event modulated field by itself, so called all optical imaging. This paper can answer what...
Based on assumption of the visual system characteristics unidirectional microvilli array, this paper simulated bionic model. The array is and it simplified as cylinders, which composed material with index refraction n2 periodically arranged surrounded by medium n1. Then, structure equivalent to numbers binary grating layers different periods thicknesses. effective theory (EMT) transfer matrix method, analyzed relation between transmittance s-and p-modes wavelengths in visible spectrum...
We introduce an integrated polarization detection structure consisting of a photoelectric conversion material, silicon (Si), in the form wire grid and aluminum (Al) polarizer layer. This provides transverse magnetic (TM) absorptivity enhanced extinction ratio visible spectrum. Finite difference time domain simulations were used to examine influences different periods thicknesses Si Al components. The results showed that TM exceeded 70% spectrum (a 20% improvement), electric was reduced by...
Abstract We consider one- and two-dimensional (1D 2D) optical or matter-wave media with a maximum of the local self-repulsion strength at center, minimum periphery. If central area is broad enough, it supports ground states in form flat-floor “bubbles”, topological excitations, dark solitons 1D vortices winding number m 2D. The excited are accurately approximated by Thomas-Fermi expressions. 2D bubbles, as well m=1, completely stable, while m=2 have nontrivial stability boundaries their...
We present a framing integration ultrafast photography (FIP), which integrates the structure, codes dynamic event by an inversed 4f system (I4F) and decodes regionally with high spatial resolution. In experiment about laser-induced plasma, FIP achieved rate of 5.3*1012 frames per second (fps) intrinsic resolution 110.4 lp/mm. It has excellent spatio-temporal compact flexible structure. Hence, it can probe unrepeatable intra- inter-atomic/molecular dynamics, different in size duration...