Zenghui Peng
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View article: Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy
Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy Open
We introduce a compact method for generating guide stars to enable direct wavefront sensing in Bessel two-photon microscopy. By sequentially modulating an axicon phase and a thin lens phase using a spatial light modulator (SLM), our approa…
View article: Research on energy compensation characteristics of beam deflection structure based on liquid crystal polarization grating
Research on energy compensation characteristics of beam deflection structure based on liquid crystal polarization grating Open
Growing demand for beam deflection technologies featuring wide angular range and high diffraction efficiency necessitates a quantitative analysis of the energy compensation mechanisms of the 2D beam deflection structure that account for az…
View article: Design of out-of-plane scanning linearization drive for waveguide beam scanner based on dual-frequency liquid crystal
Design of out-of-plane scanning linearization drive for waveguide beam scanner based on dual-frequency liquid crystal Open
Liquid crystal (LC) cladding waveguides, when used as a platform for non-mechanical beam scanning, show great potential for applications in LiDAR and free-space optical communications. Elastic recovery of the LC director deflection after v…
View article: Research on energy transfer characteristics for liquid crystal polarization gratings under conical incidence
Research on energy transfer characteristics for liquid crystal polarization gratings under conical incidence Open
This study reports the energy transfer characteristics between diffraction orders of the liquid crystal polarization grating (LCPG) under conical incidence, aiming to provide a valuable reference for developing a high-performance cascaded …
View article: Transmittance optimization of a liquid crystal cladding waveguide beam steerer based on the liquid crystal fringe field effect
Transmittance optimization of a liquid crystal cladding waveguide beam steerer based on the liquid crystal fringe field effect Open
Steerable electro-evanescent optical refractor (SEEOR), empowered by liquid crystal waveguide technology, presents advantages including compact size, continuous beam scanning, and high speed. These attributes demonstrate its considerable p…
View article: Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy
Compact way to generate guide star for wavefront sensing in Bessel two-photon microscopy Open
We introduce a compact method for generating guide stars to enable direct wavefront sensing in Bessel two-photon microscopy. By sequentially modulating an axicon phase and a thin lens phase using a spatial light modulator (SLM), our approa…
View article: Poisson phase diversity algorithm with automatic registration for sparse fluorescent images
Poisson phase diversity algorithm with automatic registration for sparse fluorescent images Open
The phase diversity technique is a powerful tool for aberration detection and high-resolution image restoration. This is achieved by employing a pair of images, one captured in focus and the other with a specific degree of defocus. It pres…
View article: Polarization-independent prism coupling based on a liquid crystal cladding waveguide
Polarization-independent prism coupling based on a liquid crystal cladding waveguide Open
The traditional prism coupling method is constrained by phase-matching conditions and has a strict relationship with the incident light beam mode, which makes polarization-independent light beam coupling impossible. In this paper, what we …
View article: Dual-wavelength synchronous control method for liquid crystal optical phased array
Dual-wavelength synchronous control method for liquid crystal optical phased array Open
The liquid crystal optical phased array (LCOPA), as a key beam steering device, has gained increasing significance in the field of space laser communication. With the rapid advancement of space laser communication technology, the demand fo…
View article: Continuously focus tunable 2D/3D switchable cylindrical liquid crystal microlens arrays for autostereoscopic displays
Continuously focus tunable 2D/3D switchable cylindrical liquid crystal microlens arrays for autostereoscopic displays Open
Cylindrical microlens arrays are important optical elements for autostereoscopic display. Conventional fixed focal length cylindrical microlens arrays do not allow switching between 2D mode and 3D mode when constructing a 3D viewing zone. …
View article: Visible light full Stokes polarization imaging based on twisted liquid crystal micro-polarizer arrays
Visible light full Stokes polarization imaging based on twisted liquid crystal micro-polarizer arrays Open
The micro-polarizer array is the key component of the division of focal-plane (DoFP) polarization imaging method. Currently, it is possible to achieve full Stokes information detection at a single wavelength using a designed array with the…
View article: Dynamic response characteristics and linearization of a liquid crystal cladding waveguide beam scanner
Dynamic response characteristics and linearization of a liquid crystal cladding waveguide beam scanner Open
The liquid crystal (LC) cladding waveguide beam scanner realizes beam scanning based on the modulation of the effective refractive index of the waveguide mode caused by the field-induced rotation of the LC molecules, which has the advantag…
View article: Dynamic response characteristics of optical beam deflection in liquid crystal optical phased array
Dynamic response characteristics of optical beam deflection in liquid crystal optical phased array Open
The beam deflector based on liquid crystal optical phased array (LCOPA) is a crucial component of space laser communication systems. Understanding and mastering the beam deflection characteristics under the dynamic response of LCOPA is ess…
View article: Study on dynamic response characteristics of the scanning angle in a liquid crystal cladding waveguide beam scanner
Study on dynamic response characteristics of the scanning angle in a liquid crystal cladding waveguide beam scanner Open
This paper studies the dynamic response characteristics of the scanning angle in a liquid crystal cladding waveguide beam scanner. Based on liquid crystal dynamic theory, finite element analysis and vectorial refraction law, a dynamic resp…
View article: Ultrawide-view achromatic circular polarization dynamic converter using an easy-to-integrate multi-layer structure
Ultrawide-view achromatic circular polarization dynamic converter using an easy-to-integrate multi-layer structure Open
What we believe to be a novel integrated circular polarization dynamic converter (CPDC) is proposed based on the four-layer mirror symmetry structure. By designing the twisted structure and rearranging the orientation direction of liquid c…
View article: A Novel Method for Quadrature Signal Construction in a Semiconductor Self-Mixing Interferometry System Using a Liquid Crystal Phase Shifter
A Novel Method for Quadrature Signal Construction in a Semiconductor Self-Mixing Interferometry System Using a Liquid Crystal Phase Shifter Open
We have established a novel method for quadrature signal construction in a semiconductor laser diode self-mixing interferometry system using two photodiodes and a beam splitter with a liquid crystal phase shifter (LCPS). This method entail…
View article: Design of prism coupling structure for liquid crystal cladding waveguide beam steerer
Design of prism coupling structure for liquid crystal cladding waveguide beam steerer Open
This paper proposes an extended prism coupling analysis method to accurately analyze the coupling structure of liquid crystal (LC) cladding waveguide beam steerer. We analyze the effects of LC anisotropy on the coupling of transverse elect…
View article: Metasurface-enabled polarization-independent LCoS spatial light modulator for 4K resolution and beyond
Metasurface-enabled polarization-independent LCoS spatial light modulator for 4K resolution and beyond Open
View article: Collecting, transporting and sorting micro-particles via the optical slings generated by a liquid crystal q(φ)-plate
Collecting, transporting and sorting micro-particles via the optical slings generated by a liquid crystal q(φ)-plate Open
We disclose a transporting/collecting optical sling generated by a liquid crystal geometric phase optical element with spatial variant topological charge, which shows the intriguing repelling/indrawing effect on the micro-particle along th…
View article: The Effects of Optical Aberrations to Illumination Beam Thickness in Two-Photon Excitation Microscopes
The Effects of Optical Aberrations to Illumination Beam Thickness in Two-Photon Excitation Microscopes Open
When performing in vivo imaging of live samples, it is a big challenge to penetrate thick tissues while still maintaining high resolution and a large field of view because of the sample-induced aberrations. These requirements can be met by…
View article: Effect of uncertainty on dynamic damping and stiffness of spherical hollow rubber isolators based on harmonic experiment
Effect of uncertainty on dynamic damping and stiffness of spherical hollow rubber isolators based on harmonic experiment Open
This study aims to identify the effect of uncertainty on the dynamic characteristics of a thin-walled hollow spherical rubber isolator. Firstly, the nonlinearity and uncertainties of the spherical rubber isolator were obtained by swept-sin…
View article: Study of the Lifetime Testing of Spherical Rubber Isolators
Study of the Lifetime Testing of Spherical Rubber Isolators Open
This study aims to identify the fatigue lifetime of a thin-walled hollow spherical rubber isolator subjected to harmonic and random vibrations. Firstly, the nonlinear characteristics of the rubber materials are tested and analyzed through …
View article: Multi-plane augmented reality display based on cholesteric liquid crystal reflective films
Multi-plane augmented reality display based on cholesteric liquid crystal reflective films Open
To address the accommodation-convergence conflict problem in conventional augmented reality (AR) head-mounted displays, we propose a compact multi-plane display design based on cholesteric liquid crystal (CLC) reflective films and a polari…
View article: Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller
Improved bandwidth of open loop liquid crystal adaptive optics systems with a proportional-derivative controller Open
Open loop liquid crystal adaptive optics (LC AO) has overcome the disadvantage of low energy efficiency after years of research, and its use is very promising in ground-based large aperture telescopes for visible band imaging. However, the…
View article: Highly effective and chemically stable surface enhanced Raman scattering substrates with flower-like 3D Ag-Au hetero-nanostructures
Highly effective and chemically stable surface enhanced Raman scattering substrates with flower-like 3D Ag-Au hetero-nanostructures Open
We demonstrated flower-like 3D Ag-Au hetero-nanostructures on an indium tin oxide glass (ITO glass) for surface enhanced Raman scattering (SERS) applications. The flower-like 3D Ag nanostructures were obtained through electrodeposition wit…
View article: Controlling Morphology and Aggregation in Semiconducting Polymers: The Role of Solvents on Lasing Emission in Poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene-vinylene]
Controlling Morphology and Aggregation in Semiconducting Polymers: The Role of Solvents on Lasing Emission in Poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene-vinylene] Open
Systematic experiments were performed to investigate solvent-dependent morphology and aggregation of the semiconducting polymer film poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene-vinylene] (MEH-PPV), which was span-cast from nonaromat…
View article: Organic Solid-State Tri-Wavelength Lasing from Holographic Polymer-Dispersed Liquid Crystal and a Distributed Feedback Laser with a Doped Laser Dye and a Semiconducting Polymer Film
Organic Solid-State Tri-Wavelength Lasing from Holographic Polymer-Dispersed Liquid Crystal and a Distributed Feedback Laser with a Doped Laser Dye and a Semiconducting Polymer Film Open
Organic solid-state tri-wavelength lasing was demonstrated from dye-doped holographic polymer-dispersed liquid crystal (HPDLC) distributed feedback (DFB) laser with semiconducting polymer poly[-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene-v…
View article: Tunable surface-emitting dual-wavelength laser from a blended gain layer with an external holographic grating feedback structure
Tunable surface-emitting dual-wavelength laser from a blended gain layer with an external holographic grating feedback structure Open
A tunable surface-emitting dual-wavelength laser emitted from the blended organic gain layer based on a holographic polymer dispersed liquid crystal (HPDLC) transmission grating feedback structure was reported. The organic blended gain lay…
View article: Experimental realization of hyperbolic dispersion metamaterial for the whole visible spectrum based on liquid crystalline phase soft template
Experimental realization of hyperbolic dispersion metamaterial for the whole visible spectrum based on liquid crystalline phase soft template Open
We experimentally demonstrated a metamaterial composed of hexagonal arrays of silver nanowires that exhibits hyperbolic dispersion and negative refraction in the entire visual wavelength range. The nanowires with extremely small size of 10…
View article: Large-scale controlled fabrication of highly roughened flower-like silver nanostructures in liquid crystalline phase
Large-scale controlled fabrication of highly roughened flower-like silver nanostructures in liquid crystalline phase Open
Large-scale controllable fabrication of highly roughened flower-like silver nanostructures is demonstrated experimentally via electrodeposition in the liquid crystalline phase. Different sizes of silver flowers are fabricated by adjusting …