A5042873972- Laser Material Processing Techniques
- Advanced Optical Imaging Technologies
- Laser-induced spectroscopy and plasma
- Photorefractive and Nonlinear Optics
- Nonlinear Optical Materials Studies
- Advanced Surface Polishing Techniques
- Laser Design and Applications
- Ocular and Laser Science Research
- Laser-Matter Interactions and Applications
- Semiconductor Lasers and Optical Devices
- Surface Roughness and Optical Measurements
- Advanced Fiber Laser Technologies
- Orbital Angular Momentum in Optics
- Solid State Laser Technologies
- Photonic and Optical Devices
- Advanced Combustion Engine Technologies
- Optical Coherence Tomography Applications
- Optical Coatings and Gratings
- High Entropy Alloys Studies
- Surface Treatment and Coatings
- Optical Systems and Laser Technology
- Plasma Applications and Diagnostics
- Laser-Ablation Synthesis of Nanoparticles
- Combustion and flame dynamics
- Quantum Dots Synthesis And Properties
Jiangsu Industry Technology Research Institute
2025
University of Liverpool
2007-2018
Advanced Laser Technology (United Kingdom)
2018
Jiangsu Normal University
2018
Hubei University of Technology
2012
University of Manchester
2007-2010
Abstract Perovskite light‐emitting diodes (PeLEDs) have recently attracted great interest for their superior electroluminescent properties. However, the development of pure red (620–660 nm) PeLEDs as an essential component display applications continues to be hampered by severe nonradiative recombination. Particularly, solution fabrication process perovskites poses a challenge in white PeLEDs, which further hinders commercialization. Herein, novel design is reported high‐efficiency hybrid...
Ultrafast laser parallel microdrilling using diffractive multiple annular beam patterns is demonstrated in this paper. The was generated by axicon computer holograms (CGHs) a spatial light modulator. diameter of the can be easily adjusted varying radius smallest ring axicon. Multiple beams with arbitrary arrangement and arrays were superimposing an CGH onto grating lenses algorithm calculated multi-beam binary Dammann CGH, respectively. Microholes drilled through 0.03 mm thick stainless...
This paper reports on a technique demonstrating for the first time successful multi-point laser-induced spark generation, which is variable in three dimensions and derived from single laser beam. Previous work ignition of internal combustion engines found that simultaneously igniting more than one location resulted stable faster – key potential advantage over conventional ignition. However, previous approaches could only generate secondary foci at fixed locations. The reported here an...
We have demonstrated an imaging-based amplitude laser-beam-shaping technique for material processing by 2D reflectivity tuning of a spatial light modulator. Intensity masks with 256 gray levels were designed to shape the input laser beam in outline profile and inside intensity distribution. Squared circular flattop shapes obtained at diffractive near-field then reconstructed image plane f-theta lens (f∼100 mm). The observed distribution beam-shaping geometry was much more even than using...
Presented here are latest advances in ultra short pulse laser based parallel processing using a spatial light modulator (SLM), which has the potential for use high throughput precision patterning of photovoltaic and other device layers. Ultra pulses allow selective material removal with minimal energy density, while computer- generated hologram driven reflective SLM is used to transform single beam into multiple beamlets increased process throughput. Based on this technique, silicon,...
Large, high efficiency, volume Bragg gratings with dimensions of 5 mm × and thickness between 1 7 20 μm pitch have been inscribed in poly(methyl)methacrylate (PMMA) 180 fs, 387 nm parallel beams using both linear circular polarizations. Linear polarization (perpendicular to the scan direction) produced highest refractive index contrast, while lowest. The measured first-order diffraction efficiency grating L agrees well theoretical expectations, reached a maximum 94% near = 4 mm, yet observed...
Laser Ignition (LI) is a new, innovative technology which overcomes several limitations of conventional spark ignition; it presents many potential advantages for engine dynamic control, especially gasoline direct injection engine. This paper highlights new approach, using principle component analysis the pressure curve, to dynamically control multiple pulse laser ignition (MPLI). In results, experimental data how MPLI improves performance and demonstrates effectiveness in lean combustion....
A beam shaping technique, which is capable of converting a Gaussian to an arbitrary 3D profile through the implementation phase-only Spatial Light Modulator (SLM) combined with polarising optics, presented. profiling camera provides visualisation alterations, allowed for control over shape and intensity distribution in real time. Various profiles can be created different applications. An investigation into production laser induced periodic surface structures (LIPSS) square flat-top shows...
Ultrafast laser micro-structuring of ceramic alumina, titanium and stainless steel are presented confirming that precision, melt free is indeed possible with intense femtosecond optical pulses. While metals best machined at a fluence few times ablation threshold, on the other hand, shows excellent structuring no evidence high F ∼ 21Jcm−2. In PMMA, 387nm pulselength 200fs, we demonstrate refractive index modification within bulk induced by two photon absorption to generate phase gratings. By...