A5086980136- Photonic and Optical Devices
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Advanced Fiber Laser Technologies
- Metamaterials and Metasurfaces Applications
- Nonlinear Photonic Systems
- Advanced Optical Imaging Technologies
- Topological Materials and Phenomena
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
Wenzhou University
2024-2025
Wenzhou University of Technology
2024-2025
Hunan Normal University
2018-2020
The special band structure of bilayer MoS2 makes it show strong nonlinear optical characteristics in the visible band, which provides a new way to develop devices. In this paper, we present theoretical analysis bistability (OB) silver–Bragg reflector by embedding at band. OB phenomenon is achieved due conductivity and excitation Tamm state interface between silver Bragg reflector. It found that hysteresis behavior threshold width can be effectively tuned varying incident light wavelength....
A highly sensitive and tunable biosensor at terahertz (THz) frequencies is proposed by using a composite structure of graphene one-dimensional photonic crystal. The theoretical analysis simulation results show that the sensitivity figure-of-merit can reach 517.9°/RIU 222.9RIU- 1, respectively. high originates from excitation optical Tamm states caused graphene-based distributed Bragg reflector. By varying voltage on graphene, we electrically control biosensor. Furthermore, have shown has...
In this paper, we propose a high-sensitivity optical sensor at terahertz frequencies based on composite structure containing one-dimensional photonic crystal (1D PC) coated with layer of monolayer graphene. Between the 1D PC and graphene there is sensing medium. This phenomenon originates from excitation resonance between PC. The proposed highly sensitive to Fermi energy graphene, thickness refractive index medium, number layers. By selecting appropriate parameters, maximum sensitivity (...
In this paper, we study the nonlinear optical bistability (OB) in a symmetrical multilayer structure. This structure is constructed by embedding three-dimensional Dirac semimetal (3D DSM) into Fabry–Perot cavity composed of one-dimensional photonic crystals. The OB phenomenon stems from third order conductivity 3D DSM. local field resonance mode could enhance nonlinearity and reduce thresholds OB. achieves tunability due to fact that transmittance be modulated Fermi energy. It found...
A tunable mid-infrared refractive index sensor consisting of bulk-Dirac-semimetal (BDS) and one-dimensional photonic crystals (1DPC) is proposed. This has high angular sensitivity ultra-high figure-of-merit (FOM), which attributed to the optical Tamm states excited at interfaces between BDS 1DPC. Our numerical simulations show that maximum value FOM can reach up 711.8°/RIU 6001 RIU−1 respectively, are much higher than those reported similar sensors. The also demonstrate sensing performance...
Highlights•Widely applicable to various high-performance light-emitting devices•Highly compatible with near-eye display systems•Unique advantages in terms of profit return, stability, and manufacturabilitySummaryNear-eye displays (NEDs) the ability sense environmental optical information are crucial for immersive human-environment-interactive technologies, which require a device brightness more than 25,000 cd/m2. Quantum dot diodes (QLEDs) promising candidate such high-bright NEDs. However,...
We investigate theoretically the optical tristability of transmission at a pair parallel graphene layers system. discuss influence sheets on hysteretic response TE-polarized transmitted light. It is demonstrated that in this configuration can be realized due to giant third-order nonlinear conductivity and appropriate structure parameters. The tristable behavior light controlled via suitably varying Fermi energy graphene. Besides, strongly dependent relaxation time dispersion characteristics...