Article
Chemistry, Analytical
Mengyun Hu, Shencheng Shi, Min Yan, E. Wu, Heping Zeng
Summary: The multidimensional-plasma-grating-induced breakdown spectroscopy (MIBS) technique is greatly influenced by laser polarization and inter-pulse delay. Compared to GIBS, MIBS shows a two-fold increase in signal intensity and about a 20% increase in induced plasma lifetime. Furthermore, the limit of detection (LOD) with MIBS is reduced by approximately 22.4 ppm, indicating its promising potential as an alternative method for trace element detection.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Optics
Mengyun Hu, Junyi Nan, Shuai Yuan, Heping Zeng
Summary: In this study, we demonstrate the stable propagation of multifilament arrays in transparent bulk media using ionization-induced volume plasma gratings (VPG). By externally arranging the propagation of pulses along regular plasma waveguides, VPG allows for precise control over the separation distances between the filaments. Furthermore, we show that VPG can be used for efficient fabrication of multidimensional grating structures in transparent bulk media through laser modification.
Article
Physics, Multidisciplinary
Zhaoli Li, Yanlei Zuo, Xiaoming Zeng, Zhaohui Wu, Xiaodong Wang, Xiao Wang, Jie Mu, Bilong Hu
Summary: This paper introduces a scheme for generating ultraintense few-cycle infrared pulses by directly compressing a long infrared pulse. The method uses a rapidly extending plasma grating to reflect and compress the infrared laser pulse. Simulations demonstrate that this method can compress a pulse in the mid- to far-infrared range with a duration of tens of picoseconds to a few cycles with an efficiency exceeding 60%.
MATTER AND RADIATION AT EXTREMES
(2023)
Article
Engineering, Electrical & Electronic
Chunyu Li, Yulia I. I. Yandybaeva, Olga V. V. Andreeva, Roman A. A. Zakoladev
Summary: With the development of laser technologies, the application of ultrashort laser in volume phase elements fabrication has shown great potential. In this study, femtosecond laser writing was used to create polarized-sensitive volume phase gratings in a nanoporous silicate matrix. The formed gratings had thicknesses of 54 μm and 77 μm, with diffraction efficiencies of 8% and 14% respectively. It was found that the volume phase gratings in the matrix demonstrated polarization sensitivity, and the diffraction efficiencies varied from 2% to 14% depending on the polarization direction. The impregnation of the matrix plate with different liquids was also investigated, providing evidence for the potential application of the volume phase gratings as sensors.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
V Shumakova, E. Schubert, T. Balciunas, M. Matthews, S. Alisauskas, D. Mongin, A. Pugzlys, J. Kasparian, A. Baltuska, J-P Wolf
Summary: The research found that mid-IR laser pulses can generate high yields of nanometric and sub-mu m aerosols, which cannot be explained by traditional mechanisms. This discovery reveals a new mechanism for aerosol stabilization and growth.
Article
Chemistry, Physical
S. O. Gurbatov, Yu. M. Borodaenko, E. V. Mitsai, E. Modin, A. Yu. Zhizhchenko, A. B. Cherepakhin, A. V. Shevlyagin, S. A. Syubaev, A. P. Porfirev, S. N. Khonina, A. P. Yelisseyev, S. I. Lobanov, L. I. Isaenko, E. L. Gurevich, A. A. Kuchmizhak
Summary: This study reveals the formation of regular laser-induced periodic surface structures (LIPSSs) in GaSe crystals through laser-driven self-organization. The ability to control the local periodicity of LIPSSs enables multilevel structural color marking on the crystal surface.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Physics, Multidisciplinary
Hetian Yang, Jingwei Wang, Shixia Luan, Ke Feng, Wentao Wang, Ruxin Li
Summary: We propose a novel method to generate a high-density, spatially periodic narrow electron beam comb (EBC) from a plasma grating induced by the interference of two intense laser pulses in subcritical-density plasma. Our simulations show that the overlap of cross-propagating laser pulses result in the formation of a transverse standing wave, leading to a spatially periodic high-density modulation known as a plasma grating. The peak electron density within the grating can reach several times the background plasma density, forming a periodic narrow EBC in the nanoscale range.
MATTER AND RADIATION AT EXTREMES
(2023)
Article
Physics, Multidisciplinary
Jia Wang, Ming Zeng, Dazhang Li, Xiaoning Wang, Wei Lu, Jie Gao
Summary: A new injection scheme is proposed to generate electron beams with a few permille energy spread, submillimeter milliradian emittance, and more than a 100 pC charge in laser wakefield accelerators. The scheme uses an interference ring pattern to create onion-like multisheaths in the plasma wakefield, and the change in wavefront curvature triggers the injection of plasma electrons.
MATTER AND RADIATION AT EXTREMES
(2022)
Article
Optics
Olivier Bernard, Andrea Kraxner, Assim Boukhayma, Jeff A. Squier, Christian Enz, Yves Bellouard
Summary: In the last two decades, ultrafast in-volume laser-based processing of transparent materials has become a key 3D-printing method. However, determining suitable laser process parameters for a given substrate is still a time-consuming task. This study introduces a method using in situ full-field third-harmonic generation (THG) microscopy to quickly identify the entire processing space and extract incubation laws governing the laser exposure process, enabling accelerated implementations of laser processes and closed-loop process control.
Article
Multidisciplinary Sciences
Amit D. Lad, Y. Mishima, Prashant Kumar Singh, Boyuan Li, Amitava Adak, Gourab Chatterjee, P. Brijesh, Malay Dalui, M. Inoue, J. Jha, Sheroy Tata, M. Trivikram, M. Krishnamurthy, Min Chen, Z. M. Sheng, K. A. Tanaka, G. Ravindra Kumar, H. Habara
Summary: This study demonstrates the generation of bright, energetic, and directional electron bunches by efficiently transferring energy from high contrast laser pulses to grating targets under surface plasmon resonance (SPR) conditions. The surface plasmon excited grating target enhances the electron flux and temperature. Particle-in-Cell simulations explain the emission of fast electrons in different directions during laser interaction.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Fluids & Plasmas
Shaoyi Wang, Fang Tan, Zuhua Yang, Yuchi Wu, Xiaohui Zhang, Minghai Yu, Yue Yang, Yonghong Yan, Bin Zhu, Lai Wei, Quanping Fan, Jingqin Su, Yuqiu Gu, Weimin Zhou
Summary: This study investigates the spectral characteristics of high-order harmonics generated by the interaction of a linearly polarized relativistic laser pulse with a plasma grating target. The results show that special harmonics with integer multiples of the grating frequency can be selected using a plasma grating target with a periodic structure, while low-order harmonics with frequencies being integer times of the laser frequency are generated near the target surface using a Fresnel zone plate target with an aperiodic structure. The spectral control of the harmonics can be achieved by introducing a correction factor and adjusting the parameters of the plasma grating.
Article
Optics
Shing Yiu Fu, Kareem J. Garriga Francis, Mervin Lim Pac Chong, E. Yiwen, X. -C. Zhang
Summary: We investigate the processes behind enhanced second harmonic wave generated from a laser-induced air plasma, focusing on the temporal dynamics of the frequency conversion processes, and the polarization of the emitted second harmonic beam. The efficiency of second harmonic generation is found to be consistently high within a sub-picosecond time window, regardless of the duration of the fundamental pulse. The polarization of the second harmonic field is complex and dependent on the polarization of both input fundamental beams when using an orthogonal pump-probe configuration.
Article
Optics
Srinivasa Rao Konda, Yu Hang Lai, Wei Li
Summary: The study explores high-order harmonics generation using silver plasma plumes ablated by fs laser pulses, showing enhanced intensity and cut-off with shorter pulse duration. Experimentally, the cut-off frequencies for Ag+ and Ag2+ ions closely match theoretical values. Chirped fs driving pulses result in blueshift and redshift of harmonic spectra, increasing intensity of specific harmonic ranges. Comparing bulk and nanoparticles, smaller NPs demonstrate greater HHG efficiency.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Maria Ruchkina, Dina Hot, Pengji Ding, Ali Hosseinnia, Per-Erik Bengtsson, Zhongshan Li, Joakim Bood, Anna-Lena Sahlberg
Summary: Laser-induced grating spectroscopy (LIGS) was explored for the first time in a configuration based on the crossing of two focused femtosecond laser pulses and a focused continuous-wave laser beam. The study demonstrated the feasibility of using this configuration for thermometry in heated nitrogen gas flows. Additionally, the research revealed the multi-photon absorption pathways for N2 and N2+ ion, as well as the impact of plasma generation on the LIGS signal at higher pulse energies.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Jean-Sebastien Boisvert, Sebastien Loranger, Raman Kashyap
Summary: In this work, we demonstrate the integration of a spectrometer directly into a smartphone screen using femtosecond laser inscription. This allows for quick information gathering through in-the-field absorption spectroscopy.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Yuzhi Shi, Tongtong Zhu, Tianhang Zhang, Alfredo Mazzulla, Din Ping Tsai, Weiqiang Ding, Ai Qun Liu, Gabriella Cipparrone, Juan Jose Saenz, Cheng-Wei Qiu
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Physics, Multidisciplinary
Ning Han, Jianlong Liu, Yang Gao, Keya Zhou, Shutian Liu
ANNALEN DER PHYSIK
(2020)
Article
Physics, Applied
Kai Guo, Keya Zhou, Zhongyi Guo
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Optics
Lin Wang, Yongyin Cao, Yanxia Zhang, Bojian Shi, Hang Li, Rui Feng, Fangkui Sun, Weiqiang Ding
Summary: In this paper, a numerical simulation is presented to demonstrate an active and efficient optical collection mechanism using an array of concentric dielectric rings with optimized nanoholes. By tuning the incident wavelength, trapped particles can be transferred from outer rings to inner neighboring rings and finally collected at the center. This mechanism paves the way for efficient particle collection and has potential applications in various optical manipulations.
Article
Physics, Multidisciplinary
Jun Ma, Kai Guo, Fujia Chen, Keya Zhou, Shutian Liu, Zhongyi Guo
Summary: This work designs 2D higher-order TPCs for engineering optical second harmonic generation (SHG) by achieving a topological corner-state and obtaining topological edge-states. The enhanced SHG signal from the corner-state can be precisely manipulated for transmitting through the designed interface with low loss due to the topological protection of edge waves, showcasing potential applications in optical communication and optical computing technologies.
ANNALEN DER PHYSIK
(2021)
Article
Optics
Ning Han, Jianlong Liu, Yang Gao, Keya Zhou, Shutian Liu
Summary: The study reveals that multiple one-way surface modes can be achieved in continuous media with small Chern number, leading to a new topological phase. Additionally, degeneracy of multiple surface waves is found in double semi-ellipsoid-like metamaterials. The direction of wave propagation is determined by their own ellipticities.
Article
Optics
Kai Guo, Jintao Wu, Fujia Chen, Keya Zhou, Shutian Liu, Zhongyi Guo
Summary: Enhanced second harmonic generation (SHG) and directional emission can be achieved from a topological corner state in an all-dielectric topological photonic crystal, showing a high Q-factor and strong confinement of light at the corner. The enhanced SHG also exhibits robustness against a broad class of defects, offering practical advantages for integrated optical circuits.
Article
Engineering, Electrical & Electronic
Kai Guo, Keya Zhou, Wei Liu, Zhongyi Guo
Summary: In this study, plasmonic toroidal dipole resonance was observed in core-shell nanodisks, leading to enhanced second harmonic generation (SHG). The frequency of this SHG is dependent on the refractive index of the dielectric core, with a red shift as the index increases. The findings could potentially contribute to the development of nonlinear nanooptics and their practical applications.
IEEE PHOTONICS JOURNAL
(2021)
Article
Physics, Applied
Kai Guo, Qingsong Xue, Fujia Chen, Keya Zhou, Shutian Liu, Zhongyi Guo
Summary: In this work, a tunable topological valley-Hall edge state is constructed based on the large optical Kerr effect. By engineering the intensity of the injected pump, a topological phase transition is demonstrated to generate a valley-Hall edge state at the interface between regions with different topological properties. The eigenfrequency and transmission characteristics of the edge state are investigated as a function of applied pump intensity, with a focus on the topological protected valley-dependent transmission under non-uniform distributed pump intensity. This research may lead to the design of reconfigurable all-optical metadevices.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Xiaobo Lv, Zhihui Yang, Yifei Wang, Keya Zhou, Jie Lin, Peng Jin
Summary: SCISP technology achieves spectral and polarization imaging without scanning, using neural networks to overcome limitations of Fourier reconstruction. Experimental results confirm high spectral and polarization accuracy can be maintained using neural networks.
Article
Optics
Keya Zhou, Qi Liu, Jie Lin, Peng Jin, Qingxin Yang, Shutian Liu
Summary: The study introduced a nonconservative coupling scheme based on the add-drop filter configuration, enabling controllable transmission peaks. Extraordinary scattering points are predicted when one of the supermodes becomes lossless, suggesting potential applications in tunable light steering.
Article
Optics
Bojian Shi, Yongyin Cao, Tongtong Zhu, Hang Li, Yanxia Zhang, Rui Feng, Fangkui Sun, Weiqiang Ding
Summary: This study proposes a method of optical manipulation in topological photonic structures, which achieves resonant optical sorting through topological protection, providing a possibility for efficient on-chip optical sorting in biophysical and bio-chemical analysis.
PHOTONICS RESEARCH
(2022)
Article
Physics, Applied
Qi Jia, Rui Feng, Bojian Shi, Fangkui Sun, Yanxia Zhang, Hang Li, Xiaoxin Li, Yongyin Cao, Jian Wang, Weiqiang Ding
Summary: This study proposes a deep neural network (DNN)-N-2 method for compensating distorted OAM beams by extracting common features and filtering random distortions. Good agreement between experimental and simulated results is achieved.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Ning Han, Jianlong Liu, Yang Gao, Keya Zhou, Shutian Liu
Summary: This study introduces a photonic topological metamaterial that can support surface states with gaps, even when the electromagnetic duality symmetry of the material system is broken. The surface waves can still bypass sharp corners robustly. By changing the electromagnetic parameters of the covering materials, the filtering effect with controllable bandwidth can be realized.
Article
Optics
Wenjia Li, Jianlong Liu, Yang Gao, Keya Zhou, Shutian Liu
