Issue Ebook
cover story
- Current Issue
- Archive
Volume 15 Issue 2，2026
News & Views
Abstract：Available transducers do not fulfill all of the necessary design criteria for high-performance hemispherical optoacoustic tomography, namely: an ultrawide bandwidth in order to acquire the full range of optoacoustic emissions from targets of interest, good impedance matching to minimize reverberation artifacts, and a modifiable form factor, for inclusion in non-flat geometries. Polyvinylidene fluoride (PVDF) transducers can, in principle, meet all of these criteria, but PVDF has known shortcomings. In Ultrawideband high-density polymer-based spherical array for functional optoacoustic micro-angiography, all of the challenges of working with PVDF are overcome with the demonstration of a high-performance PVDF-based hemispherical optoacoustic tomographic system.6|2|0Updated：2026-02-11- Abstract：A recent study employing high-spatial-resolution photoemission electron microscopy (PEEM) achieved, for the first time, weak-disturbance imaging of the ultra-confined nanoslit mode in a coupled nanowire pair (CNP), revealing its quasi-three-dimensional field distribution.4|1|0Updated：2026-02-11
- Abstract：A silicon photonic deep optical neural network integrating convolutional and fully connected layers with on-chip optoelectronic nonlinear activations operates with partially coherent light to achieve high-speed, energy-efficient, end-to-end inference. This demonstration establishes a functional and scalable platform for evaluating complete optical neural processing, representing another step toward specialised, ultrafast photonic architectures beyond electronics.3|2|0Updated：2026-02-11
- Abstract：Both compressing and expanding optical matrix-vector multipliers are necessary for the full optical realization of neural networks. An expanding multiplier scheme is proposed, which, together with common compressing multipliers, is employed to demonstrate image processor networks such as autoencoders and image generators.3|1|0Updated：2026-02-11
- Abstract：The differences in critical times and critical momenta between self-normal and biorthogonal dynamical quantum phase transitions are revealed. The theoretical analysis is experimentally validated through multiple quench processes using a one-dimensional discrete-time non-Hermitian quantum walks.4|2|0Updated：2026-02-11
Light People
Abstract："To eyelids in the Sepulchre—/ How dumb the Dancer lies—/ While Color's Revelations break—/ And blaze—the Butterflies!" A renowned American poet, Emily Dickinson's poem vividly mirrors the journey of women's growth: No matter how many hardships they encounter in their development or constraints they face, they will eventually break free from their "cocoons" and transform into colorful butterflies radiating "light". In this issue of "Light People", Professor Siying Peng is invited to share how the optical properties of butterfly wings have inspired her metamorphosis in the field of photonics.3|2|0Updated：2026-02-11Reviews
Abstract：The first measurement of attosecond pulses in 2001 unleashed a new wave of exploration in the microcosmic world. The pulse width has since shrunk from an initial 650 to 43 as, and the flux, photon energy, and repetition rates have progressively been raised. The performance of attosecond pulses hinges upon the driving lasers, whose rapid development underlaid many advancements of attosecond technology. Yet the expansion of new applications in attosecond science demands driving lasers with ever better performance. Beginning with the fundamental principles of attosecond pulse generation and applications, this article reviews the evolution and trend of the driving lasers in terms of pulse energy, pulse width, wavelength, and repetition rate.3|2|0Updated：2026-02-11- Abstract：All-perovskite tandem solar cells represent a promising strategy for breaking the Shockley-Queisser limits inherent in single-junction solar cells. Reasonable light management and optical design are necessary for all-perovskite tandem solar cells to improve power conversion efficiency. In this review, the recent progresses in light management for monolithic all-perovskite tandem solar cells are summarized comprehensively. The current-matching conditions, optical challenges, and potential development trajectories for all-perovskite tandem solar cells are investigated. It includes key optical losses, enhancements and strategies for light trapping and light utilization. Ultimately, forward-looking perspectives on future developments are presented. This review aims to offer valuable insights and practical suggestions for improving power conversion efficiency of all-perovskite tandem solar cells from light management techniques.5|2|0Updated：2026-02-11
Original Articles
Abstract：Polarized topological vertical cavity surface-emitting lasers (VCSELs) are promising candidates for stable and efficient on-chip light sources, with significant potential for advancing optical storage and communication technologies. However, most semiconductor-based topological lasers rely on intricate fabrication techniques and face limitations in providing the flexibility needed for diverse device applications. By drawing an analogy to two-dimensional Semenov insulators and the quantum valley Hall effect in a synthetic parameter space, we design and realize a one-dimensional optical superlattice using stacked polymerized cholesteric liquid crystal films and Mylar films. Such a one-dimensional optical superlattice is achieved by using films spin-coated with a Pyrromethene 597 solution, thus enabling the demonstration of a structure-flexible, low threshold, and circularly-polarized topological VCSEL. We demonstrate that such a topological VCSEL maintains excellent single-mode operation at low pump power, and its spatial profile aligns closely with that of the pump laser. Thanks to the soft-matter-based metastructure, the topological laser can be “attached” to substrates of various shapes, maintaining desired laser properties and beam steering even after undergoing multiple bends. These characteristics make the demonstrated topological laser ideal for applications in consumer electronics, laser scanning, displays, and photonic wearable devices, where both flexibility and performance are crucial.7|2|0Updated：2026-02-11- Abstract：All-optical logic has the potential to overcome the operation speed barrier that has persisted in electronic circuits for two decades. However, the development of scalable architectures has been prevented so far by the lack of materials with sufficiently strong nonlinear interactions needed to realize compact and efficient ultrafast all-optical switches with optical gain. Microcavities with embedded organic material in the strong light-matter interaction regime have recently enabled all-optical transistors operating at room temperature with picosecond switching times. However, the vertical cavity geometry, which is predominantly used in polaritonics, is not suitable for complex circuits with on-chip coupled transistors. Here, by leveraging state-of-the-art silicon photonics technology, we have achieved exciton-polariton condensation at ambient conditions in fully integrated high-index contrast sub-wavelength grating microcavities filled with a π-conjugated polymer as optically active material. We demonstrate ultrafast all-optical transistor action by coupling two resonators and utilizing seeded polariton condensation. With a device area as small as 2 × 2 µm2, we realize picosecond switching and amplification up to 60x, with extinction ratio up to 8:1. This compact ultrafast transistor device with in-plane integration is a key component for a scalable platform for all-optical logic circuits that could operate two orders of magnitude faster than electronic counterparts.3|2|0Updated：2026-02-11
SEE MORE
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0