News
On the Cover: Spatial symmetries in nonlocal multipolar metasurfaces
The image represents the interactions of a ?at spiral shaped particle with an incident beam of light. From the perspective of spatial symmetries, this spiral is not a geometrical chiral object. However, thanks to the framework developed in the article, it can be demonstrated that the particle nonetheless exhibits pseudochiral responses in the form of quadrupolar contributions.The image represents the interactions of a ?at spiral shaped particle with an incident beam of light. From the perspective of spatial symmetries, this spiral is not a geometrical chiral object. However, thanks to the framework developed in the article, it can be demonstrated that the particle nonetheless exhibits pseudochiral responses in the form of quadrupolar contributions.
- Journal
- 1th Dec，2023
Plenary Speakers of HPLSE 2023 Announced
Recently, the 5th International Symposium on High Power Laser Science and Engineering (HPLSE 2023), to be held on October 16-19, 2023 in Suzhou, China, announced its six plenary speakers.Recently, the 5th International Symposium on High Power Laser Science and Engineering (HPLSE 2023), to be held on October 16-19, 2023 in Suzhou, China, announced its six plenary speakers.
- Conference
- 22th Sep，2023
On the Cover: Applications of object detection networks in high-power laser systems and experiments
The image shows fast object detection and data analysis of high-power high-repetition-rate laserplasma experiment using neural networks. In the petawatt, Hz laser system at the Center for Advanced Laser Applications, Munich, object detection networks are used to rapidly process and visualize various diagnostic data from each frame of the laser’s output images, including electron energy spectra, plasma wave, and laser damage.The image shows fast object detection and data analysis of high-power high-repetition-rate laserplasma experiment using neural networks. In the petawatt, Hz laser system at the Center for Advanced Laser Applications, Munich, object detection networks are used to rapidly process and visualize various diagnostic data from each frame of the laser’s output images, including electron energy spectra, plasma wave, and laser damage.
- Journal
- 4th Sep，2023
On the Cover: Electron pulse train accelerated by a linearly polarized Laguerre–Gaussian laser beam
Helical laser beams, due to their unique ?eld structure, are ideal optical drivers for producing monoenergetic, pellet-like electron bunches. In contrast to regular laser beams, their ?eld structure close to the axis of the beam is dominated by longitudinal electric and magnetic ?elds. The bunches are generated as a result of two synergetic e?ects that take place when such a beam is re?ected o? a mirror: the longitudinal electric ?eld accelerates electrons after extracting them from the mirror surface; while the magnetic ?eld con?nes them into the central region, allowing for acceleration within the laser over a long duration.Helical laser beams, due to their unique ?eld structure, are ideal optical drivers for producing monoenergetic, pellet-like electron bunches. In contrast to regular laser beams, their ?eld structure close to the axis of the beam is dominated by longitudinal electric and magnetic ?elds. The bunches are generated as a result of two synergetic e?ects that take place when such a beam is re?ected o? a mirror: the longitudinal electric ?eld accelerates electrons after extracting them from the mirror surface; while the magnetic ?eld con?nes them into the central region, allowing for acceleration within the laser over a long duration.
- Journal
- 4th Sep，2023
On the Cover: Quasiperiodic photonic crystal fiber [Invited]
The cover image illustrates the photonic quasicrystal fiber (PQF), which is also named quasiperiodic photonic crystal fiber. The five insets surrounding the PQF end-face provide a simultaneous display of three typical structures and two representative potential applications of PQF. The three white-circled insets (top-left, right, and bottom-left) represent the Stampfli-type, Penrose-type, and Sunflower-type structures, respectively. The two blue-circled insets (left and bottom-right) show applications of the supercontinuum generation and orbital angular momentum mode propagation, respectively.The cover image illustrates the photonic quasicrystal fiber (PQF), which is also named quasiperiodic photonic crystal fiber. The five insets surrounding the PQF end-face provide a simultaneous display of three typical structures and two representative potential applications of PQF. The three white-circled insets (top-left, right, and bottom-left) represent the Stampfli-type, Penrose-type, and Sunflower-type structures, respectively. The two blue-circled insets (left and bottom-right) show applications of the supercontinuum generation and orbital angular momentum mode propagation, respectively.
- Journal
- 25th Aug，2023
On the Cover: Promoting spintronic terahertz radiation via Tamm plasmon coupling
By harnessing Tamm plasmon coupling, spintronics THz radiation not only achieved a 264% enhancement but guaranteed nearly lossless (~4%) THz transmission. This approach provides the compatible optical structure design and the low energy consumption for ultrafast opto-spintronics devices.By harnessing Tamm plasmon coupling, spintronics THz radiation not only achieved a 264% enhancement but guaranteed nearly lossless (~4%) THz transmission. This approach provides the compatible optical structure design and the low energy consumption for ultrafast opto-spintronics devices.
- Journal
- 25th Aug，2023
On the Cover: Deep learning reconstruction enables full-Stokes single compression in polarized hyperspectral imaging
A snapshot full-polarization hyperspectral imaging method based on convolutional neural network (CNN) reconstruction is proposed. In the imaging system, a quarter-wave plate is combined with a liquid crystal tunable filter to encode full-polarization information. Meanwhile, the liquid crystal tunable filter flexibly selects spectral bands of interest. Finally, a CMOS detector captures the total light intensity image after full-polarization encoding. In the reconstructed model, a two-layer CNN reconstructs four full-polarization images from one full-polarization encoded image. The cover image shows the main components of both the full-polarization hyperspectral imaging system and the CNN reconstruction model.A snapshot full-polarization hyperspectral imaging method based on convolutional neural network (CNN) reconstruction is proposed. In the imaging system, a quarter-wave plate is combined with a liquid crystal tunable filter to encode full-polarization information. Meanwhile, the liquid crystal tunable filter flexibly selects spectral bands of interest. Finally, a CMOS detector captures the total light intensity image after full-polarization encoding. In the reconstructed model, a two-layer CNN reconstructs four full-polarization images from one full-polarization encoded image. The cover image shows the main components of both the full-polarization hyperspectral imaging system and the CNN reconstruction model.
- Journal
- 24th Aug，2023
On the Cover: Two-beam phase correlation spectroscopy: a label-free holographic method to quantify particle flow in biofluids
Two-beam phase correlation spectroscopy is a label-free technique to quantify the dynamics of flowing particles, such as red blood cells in vessels of live zebrafish, utilizing the intrinsic refractive index contrast of particles against the fluid background in correlation analysis.Two-beam phase correlation spectroscopy is a label-free technique to quantify the dynamics of flowing particles, such as red blood cells in vessels of live zebrafish, utilizing the intrinsic refractive index contrast of particles against the fluid background in correlation analysis.
- Journal
- 24th Aug，2023
On the Cover: Propagation of transverse photonic orbital angular momentum through few-mode fiber
The image on the cover of Advanced Photonics Volume 5 Issue 3 illustrates the propagation of a spatiotemporal optical vortex wavepacket through an optical fiber, based on original research presented in the article by Qian Cao, Zhuo Chen, Chong Zhang, Andy Chong, and Qiwen Zhan in their article “ Propagation of transverse photonic orbital angular momentum through few-mode fiber" . This article presents the first demonstration of STOV pulse propagation through a few-mode optical fiber. The authors note that the wavepacket maintains its spatiotemporal phase structure well, demonstrating the new possibility of transmitting transverse OAM inside fiber.The image on the cover of Advanced Photonics Volume 5 Issue 3 illustrates the propagation of a spatiotemporal optical vortex wavepacket through an optical fiber, based on original research presented in the article by Qian Cao, Zhuo Chen, Chong Zhang, Andy Chong, and Qiwen Zhan in their article “ Propagation of transverse photonic orbital angular momentum through few-mode fiber" . This article presents the first demonstration of STOV pulse propagation through a few-mode optical fiber. The authors note that the wavepacket maintains its spatiotemporal phase structure well, demonstrating the new possibility of transmitting transverse OAM inside fiber.
- Journal
- 17th Aug，2023
On the Cover: Integrated-resonant metadevices: a review
Integrated-resonant units (IRUs), associating various metaatoms, resonant modes, and functionalities into one supercell, have shown great promise in tailoring composite and multifunctional electromagnetic responses with additional degrees of freedom. Integrated-resonant meta-devices can o?er many advantages over conventional optical devices, including broadband achromatism, e?ciency enhancement, response selectivity, and continuous tunability, o?ering great potential for performant and versatile application scenarios, such as achromatic imaging, light-?eld sensing, polarization detection, orbital angular momentum generation, metaholography, nanoprinting, color routing, and nonlinear generation. The image on the cover depicts a schematic of the integratedresonant metadevice composed of various multifunctional integrated-resonant units, as well as their subsequent applications, including polarization detection, orbital angular momentum generation, metaholography, nonlinear generation, and so on.Integrated-resonant units (IRUs), associating various metaatoms, resonant modes, and functionalities into one supercell, have shown great promise in tailoring composite and multifunctional electromagnetic responses with additional degrees of freedom. Integrated-resonant meta-devices can o?er many advantages over conventional optical devices, including broadband achromatism, e?ciency enhancement, response selectivity, and continuous tunability, o?ering great potential for performant and versatile application scenarios, such as achromatic imaging, light-?eld sensing, polarization detection, orbital angular momentum generation, metaholography, nanoprinting, color routing, and nonlinear generation. The image on the cover depicts a schematic of the integratedresonant metadevice composed of various multifunctional integrated-resonant units, as well as their subsequent applications, including polarization detection, orbital angular momentum generation, metaholography, nonlinear generation, and so on.
- Journal
- 17th Aug，2023
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